18.3 Criminal Procedure: 4th, 5th & 6th Amendment Protections

18.3 Criminal Procedure: 4th, 5th & 6th Amendment Protections

[!NOTE] NALS PP Exam Blueprint Focus: Constitutional criminal procedure constitutes one of the most rigorously tested procedural subjects on the NALS Professional Paralegal (PP) Certification Examination (Part 4: Advanced Substantive Law). Paralegals working in prosecution or criminal defense must master the operational mechanics of Fourth Amendment search warrant requirements and recognized warrant exceptions, evaluate Exclusionary Rule remedies and good-faith doctrines, analyze Fifth Amendment custodial interrogation standards under Miranda and Double Jeopardy protections, track the attachment and scope of the Sixth Amendment right to counsel under Strickland and Crawford confrontation principles, and navigate every phase of the criminal procedural timeline from initial appearance to post-conviction habeas corpus.

Constitutional criminal procedure regulates the balance between the sovereign power of the state to investigate, prosecute, and punish crime, and the fundamental constitutional rights of individuals accused of criminal offenses. These protections are anchored in the Fourth, Fifth, Sixth, and Eighth Amendments to the United States Constitution, incorporated and made applicable against state governments through the Due Process Clause of the Fourteenth Amendment.

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The Fourth Amendment: Search & Seizure Framework

The Fourth Amendment protects individuals from "unreasonable searches and seizures" conducted by governmental actors. A Fourth Amendment challenge proceeds through a structured constitutional inquiry: (1) Was there governmental action? (2) Did the individual have a reasonable expectation of privacy? (3) Did law enforcement possess a valid search warrant? (4) If no warrant was obtained, did the search fall within a recognized exception to the warrant requirement?

1. The Reasonable Expectation of Privacy (Katz Standard)

Governmental intrusion constitutes a Fourth Amendment "search" only if it invades an area where an individual holds a constitutionally protected reasonable expectation of privacy. Under the landmark two-prong test established in Katz v. United States (1967):

1. Subjective Prong: The individual must have exhibited an actual, subjective expectation of privacy in the place or item searched;
2. Objective Prong: That expectation of privacy must be one that society is prepared to recognize as objectively reasonable.

Scope of Fourth Amendment Protection: Curtilage vs. Open Fields

• The Home and Curtilage: The home receives the highest level of Fourth Amendment protection. This protection extends to the curtilage—the immediate domestic area intimately tied to the home and activities of domestic life (e.g., porches, fenced backyards, attached garages, private driveways).
• Open Fields Doctrine (Oliver v. United States): Unoccupied, undeveloped pastures or wooded parcels outside the curtilage are considered "open fields" and enjoy no reasonable expectation of privacy, even if the property is fenced, locked, and posted with "No Trespassing" signs.
• The Third-Party Doctrine: Individuals have no reasonable expectation of privacy in information voluntarily conveyed to third parties (e.g., dialed telephone numbers recorded on pen registers, financial records maintained by banks, or trash left in opaque bags on a public curb for collection [California v. Greenwood]).
  • Constitutional Limitation: In Carpenter v. United States (2018), the Supreme Court established that acquiring historical cell-site location information (CSLI) spanning seven days or more constitutes a Fourth Amendment search requiring a warrant based on probable cause.

2. Search Warrant Prerequisites

A search conducted without a warrant is per se unreasonable under the Fourth Amendment, subject only to a few specifically established and well-delineated exceptions. A constitutionally valid search warrant requires three indispensable components:

1. Probable Cause Supported by Oath or Affirmation: Law enforcement must submit a sworn affidavit establishing probable cause—a fair probability that contraband, instrumentalities, or evidence of a crime will be found in the particular location to be searched (Illinois v. Gates totality-of-the-circumstances standard).
2. Neutral and Detached Magistrate: The warrant must be issued by a neutral, detached judicial officer with no executive law enforcement affiliation or financial stake in the outcome.
3. Particularity Requirement: The warrant must specifically and particularly describe both the place to be searched (exact street address, structure description) and the persons or things to be seized. General exploratory warrants are unconstitutional.

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Recognized Exceptions to the Search Warrant Requirement

When law enforcement conducts a warrantless search, the prosecution bears the burden of establishing that the search was justified under one of the recognized exceptions to the warrant requirement:

+---------------------------------------------------------------------------------------------------+
|                             Warrantless Search Exceptions Summary                                 |
+---------------------------------------------------------------------------------------------------+
| Exception Doctrine           | Core Justification & Legal Requirements                            |
+------------------------------+--------------------------------------------------------------------+
| 1. Search Incident to        | Search of arrestee's person and immediate grab area (wingspan)     |
|    Lawful Arrest (SILA)      | for weapons and evidence preservation (*Chimel*).                  |
+------------------------------+--------------------------------------------------------------------+
| 2. Automobile Exception      | Probable cause that mobile vehicle contains contraband justifies   |
|    (*Carroll* Doctrine)      | warrantless search of entire vehicle and containers (*Carroll*).   |
+------------------------------+--------------------------------------------------------------------+
| 3. Plain View Doctrine       | Officer lawfully present; item in plain sight; incriminating       |
|                              | nature immediately apparent without physical manipulation (*Horton*)|
+------------------------------+--------------------------------------------------------------------+
| 4. Exigent Circumstances     | Hot pursuit of fleeing felon, evanescent evidence destruction risk,|
|                              | or emergency aid / community caretaking.                           |
+------------------------------+--------------------------------------------------------------------+
| 5. Voluntary Consent         | Freely and voluntarily given by person with actual or apparent     |
|                              | authority; physically present objecting co-tenant bars entry.      |
+------------------------------+--------------------------------------------------------------------+
| 6. Stop and Frisk            | Reasonable suspicion of criminal activity justifies stop;          |
|    (*Terry* Doctrine)        | reasonable belief suspect is armed justifies pat-down frisk.       |
+------------------------------+--------------------------------------------------------------------+
| 7. Inventory Searches        | Standardized administrative routine search of impounded vehicles   |
|                              | or arrestee personal property, non-investigatory in nature.        |
+------------------------------+--------------------------------------------------------------------+
| 8. Special Needs / Border    | Administrative safety inspections, international border searches,   |
|                              | and public school searches based on reasonable grounds (*T.L.O.*). |
+---------------------------------------------------------------------------------------------------+

1. Search Incident to Lawful Arrest (SILA)

Upon executing a lawful, custodial arrest based on probable cause, officers are authorized to conduct a contemporaneous warrantless search:

• Person and Wingspan (Chimel v. California): Officers may search the arrestee's person and the area within the arrestee's immediate reach or grab area (wingspan) to disarm the arrestee and prevent the concealment or destruction of evidence.
• Vehicular Searches Incident to Arrest (Arizona v. Gant): When an arrestee was an occupant of a motor vehicle, police may search the passenger compartment incident to arrest only if:
  1. The arrestee is unsecured and within reaching distance of the passenger compartment at the time of the search; OR
  2. It is reasonable to believe the vehicle contains evidence relevant to the crime of arrest (e.g., searching for narcotics following an arrest for drug possession; officers cannot search a vehicle incident to arrest for driving with a suspended license once the driver is secured in handcuffs).

2. The Automobile Exception (Carroll v. United States)

Under the Carroll doctrine, if police possess probable cause to believe that a readily mobile conveyance (automobile, truck, boat) contains contraband, fruits, or evidence of a crime, they may search the entire vehicle and any container inside the vehicle (including locked trunks, glove compartments, and passenger bags) that could logically conceal the object of the search (United States v. Ross). The exception is justified by the inherent mobility of vehicles and the pervasive state regulation that lowers an individual's reasonable expectation of privacy in an automobile.

3. The Plain View Doctrine

Officers may seize evidence without a warrant under the plain view doctrine if three conditions coalesce (Horton v. California):

1. The officer is lawfully present at the vantage point from which the item is observed;
2. The officer has a lawful right of physical access to the object; and
3. The incriminating character of the item is immediately apparent on its face, establishing probable cause without moving, lifting, or manipulating the item (Arizona v. Hicks).

4. Exigent Circumstances

Warrantless entry into a constitutionally protected area is permissible when emergency conditions make obtaining a warrant impracticable:

• Hot Pursuit: Officers in continuous pursuit of a fleeing felon may follow the suspect into private dwellings and seize evidence discovered within plain view.
• Evanescent Evidence: Immediate, objectively reasonable threat of imminent destruction or removal of critical evidence (e.g., flushing narcotics down a toilet).
• Emergency Aid / Community Caretaking: Objectively reasonable basis to believe that an occupant within a residence is seriously injured or threatened with imminent bodily harm (Brigham City v. Stuart).

5. Consent Searches

A search is valid without a warrant or probable cause if conducted pursuant to voluntary consent:

• Voluntariness: Consent must be freely and voluntarily given under the totality of the circumstances, uncoerced by explicit or implicit police threats. Police are not required to inform the individual of the right to refuse consent (Schneckloth v. Bustamonte).
• Third-Party Consent: Any third party who possesses common authority (joint access or control) over the premises may grant valid consent. If the third party lacks actual authority, the search remains valid if police acted in reasonable, good-faith reliance on the third party's apparent authority.
• The Co-Occupant Rule (Georgia v. Randolph): If two co-tenants are physically present at the threshold, and one tenant grants consent while the other tenant explicitly objects, the objecting tenant's refusal controls, rendering a warrantless search unlawful as to the objector. However, if the objecting tenant is lawfully arrested and removed from the scene, the remaining tenant's consent validates a subsequent search (Fernandez v. California).

6. Stop and Frisk (Terry v. Ohio)

Under Terry v. Ohio (1968), law enforcement may conduct limited investigative detentions on less than probable cause:

• The Terry Stop: A temporary, brief investigatory seizure of an individual permitted if the officer possesses reasonable articulable suspicion—based on specific, articulable facts and rational inferences—that criminal activity is afoot. Reasonable suspicion is a standard lower than probable cause, but substantially greater than a mere unparticularized hunch.
• The Terry Frisk: A protective, non-investigatory pat-down of the suspect's outer clothing permitted only if the officer possesses an independent reasonable suspicion that the suspect is armed and dangerous. The frisk is strictly limited to discovering weapons.
• The Plain Feel Doctrine (Minnesota v. Dickerson): If an officer conducting a lawful Terry weapons frisk feels an object whose contour or mass makes its identity as contraband immediately apparent without sliding, squeezing, or manipulating the object, the officer may seize it without a warrant.

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The Exclusionary Rule & Fruit of the Poisonous Tree

The Exclusionary Rule is a judicially created constitutional remedy that bars the admission of evidence obtained in violation of a defendant's Fourth, Fifth, or Sixth Amendment rights at a criminal trial (Weeks v. United States [federal]; Mapp v. Ohio [incorporated against the states]).

1. Fruit of the Poisonous Tree Doctrine

Under the Fruit of the Poisonous Tree doctrine (Wong Sun v. United States), the exclusionary bar applies not only to direct, primary evidence obtained during an illegal search, but also to all secondary, derivative evidence discovered as an indirect result of the primary unconstitutional police conduct.

2. Exceptions to the Exclusionary Rule

Evidence obtained following an unlawful search or seizure is saved from suppression if the prosecution establishes one of four established exceptions:

+---------------------------------------------------------------------------------------------------+
|                             Exceptions to the Exclusionary Rule                                   |
+---------------------------------------------------------------------------------------------------+
| Exception Doctrine           | Controlling Legal Rule & Operational Requirements                  |
+------------------------------+--------------------------------------------------------------------+
| 1. Good-Faith Exception      | Evidence is admissible if officers executed a search warrant in    |
|    (*United States v. Leon*) | objectively reasonable, good-faith reliance on a warrant issued by |
|                              | a detached magistrate, even if the warrant is later found invalid. |
+------------------------------+--------------------------------------------------------------------+
| 2. Independent Source        | Evidence initially discovered during an illegal search is admissible|
|    Doctrine                  | if it is later independently discovered through an untainted lawful|
|                              | source wholly independent of the initial illegality.               |
+------------------------------+--------------------------------------------------------------------+
| 3. Inevitable Discovery      | Evidence obtained unlawfully is admissible if the prosecution      |
|    (*Nix v. Williams*)       | proves by a preponderance that normal, routine police investigative|
|                              | procedures would have inevitably discovered the evidence anyway.   |
+------------------------------+--------------------------------------------------------------------+
| 4. Attenuation of the Taint  | The causal connection between the initial police illegality and the|
|    (*Utah v. Strieff*)       | derivative evidence is broken by intervening events, passage of    |
|                              | time, or an independent act of free will by the defendant.         |
+---------------------------------------------------------------------------------------------------+

[!WARNING] Limits on the Good-Faith Exception: Under United States v. Leon, the good-faith exception does NOT apply in four specific circumstances: (1) if the magistrate was misled by knowing or reckless falsehoods in the police affidavit (Franks v. Delaware); (2) if the issuing magistrate wholly abandoned judicial neutrality; (3) if the affidavit is so utterly devoid of indicia of probable cause that official reliance is entirely unreasonable; or (4) if the warrant is facially deficient in failing to specify the place to be searched or items to be seized.

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The Fifth Amendment: Self-Incrimination, Miranda & Double Jeopardy

The Fifth Amendment provides that no person "shall be compelled in any criminal case to be a witness against himself," nor be subject "for the same offense to be twice put in jeopardy of life or limb."

1. The Privilege Against Self-Incrimination & Miranda v. Arizona

The Fifth Amendment privilege protects natural persons from being compelled by the government to provide testimonial or communicative evidence that could expose them to criminal prosecution. (It does not protect against compelled production of physical evidence, such as fingerprints, blood draws, voice exemplars, or handwriting samples).

The Custodial Interrogation Trigger

Under Miranda v. Arizona (1966), statements made by a suspect during a custodial interrogation are inadmissible in the prosecution's case-in-chief unless procedural safeguards are administered:

• Custody: Formally placed under arrest, or subjected to a restraint on freedom of movement to a degree associated with formal arrest, evaluated under an objective reasonable person standard (Stansbury v. California). Routine traffic stops and Terry investigative stops do not constitute custody.
• Interrogation: Express questioning by police, or any words, conduct, or actions on the part of police that they know or should know are reasonably likely to elicit an incriminating response from the suspect (Rhode Island v. Innis). Routine administrative booking questions are exempt.

The Four Mandatory Miranda Warnings

Prior to custodial interrogation, police must advise the suspect:

1. You have the right to remain silent;
2. Anything you say can and will be used against you in a court of law;
3. You have the right to consult with an attorney and have an attorney present during questioning;
4. If you cannot afford an attorney, one will be appointed for you prior to any questioning.

Invocation of Miranda Rights

To exercise Miranda protections, the suspect must assert their rights unambiguously and unequivocally (Berghuis v. Thompkins). Merely remaining silent does not invoke the right to silence:

• Invocation of the Right to Silence: If the suspect unequivocally states they wish to remain silent, police must "scrupulously honor" the request by immediately terminating interrogation. Police may re-approach and re-warn the suspect after a significant passage of time regarding an unrelated offense (Michigan v. Mosley).
• Invocation of the Right to Counsel (Edwards v. Arizona): If the suspect unequivocally asserts the right to counsel, all questioning must immediately cease. Police are strictly prohibited from interrogating the suspect regarding any crime whatsoever until counsel is made available, unless the suspect personally initiates further communication. Under Maryland v. Shatzer (2010), the Edwards interrogation bar expires after a 14-day break in custody.
• The Public Safety Exception (New York v. Quarles): Miranda warnings are not required before questioning if police officers are confronted with an immediate, urgent threat to public safety (e.g., asking an armed suspect in a crowded supermarket, "Where is the gun?").

2. The Double Jeopardy Clause

The Fifth Amendment Double Jeopardy Clause protects an individual against: (1) a second prosecution for the same offense after acquittal; (2) a second prosecution for the same offense after conviction; and (3) multiple punishments for the same offense imposed in a single proceeding.

• Attachment of Jeopardy: Jeopardy attaches:
  • In a jury trial, the moment the jury is empaneled and sworn;
  • In a bench (court) trial, the moment the first witness is sworn.
• The Same Offense Test (Blockburger v. United States): Two offenses are not the same for Double Jeopardy purposes if each statutory provision requires proof of an additional element that the other does not.
• The Dual Sovereignty Doctrine (Gamble v. United States): State and federal governments (or two distinct sovereign states) are separate sovereigns. Both may prosecute an individual for the exact same underlying conduct without violating Double Jeopardy.

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The Sixth Amendment: Counsel, Speedy Trial, Jury & Confrontation

The Sixth Amendment provides critical trial-stage procedural guarantees.

1. The Right to Assistance of Counsel

Under Gideon v. Wainwright (1963) and Argersinger v. Hamlin (1972), indigent defendants are entitled to court-appointed defense counsel in all felony prosecutions and in misdemeanor cases resulting in actual incarceration.

• Attachment of the Sixth Amendment Right: Attaches automatically upon the initiation of formal adversary judicial proceedings—whether by way of formal charge, preliminary hearing, indictment, information, or arraignment. It applies to all "critical stages" of the criminal process (post-charge interrogations, preliminary hearings, line-ups, plea bargaining, trial, and sentencing).
• Offense-Specific Nature (Texas v. Cobb): Unlike the Fifth Amendment Miranda-Edwards right to counsel, the Sixth Amendment right is strictly offense-specific. Once formal charges are filed regarding Crime A, police cannot question the defendant about Crime A without counsel. However, police may question the defendant about an uncharged Crime B without violating the Sixth Amendment, provided Fifth Amendment Miranda rules are observed.
• Ineffective Assistance of Counsel (Strickland v. Washington): To overturn a conviction based on ineffective assistance of counsel, the defendant must satisfy a stringent two-prong standard:
  1. Deficient Performance: Counsel's representation fell substantially below an objective standard of reasonableness under prevailing professional norms; and
  2. Prejudice: A reasonable probability that, but for counsel's unprofessional errors, the result of the proceeding would have been different.

2. Speedy Trial, Impartial Jury & The Confrontation Clause

• Right to a Speedy Trial: Evaluated under the four-factor balancing test of Barker v. Wingo: (1) length of delay; (2) reason for delay; (3) defendant's timely assertion of the right; and (4) prejudice to the defendant.
• Right to an Impartial Jury: Guarantees a jury trial for any offense with a potential incarceration period exceeding six months (Baldwin v. New York). Juries must be drawn from a venire representing a fair cross-section of the community. Peremptory challenges based on race or gender are unconstitutional (Batson v. Kentucky). Felony convictions require a unanimous jury verdict in both state and federal courts (Ramos v. Louisiana).
• The Confrontation Clause (Crawford v. Washington): In all criminal prosecutions, the accused has the right to be confronted with the witnesses against them. Out-of-court testimonial statements (formal statements, affidavits, police interrogations, forensic lab reports) are barred under the Confrontation Clause unless the declarant is unavailable and the defendant had a prior opportunity to cross-examine the declarant.
  • Ongoing Emergency Exception (Davis v. Washington): Statements made to law enforcement during an ongoing emergency (e.g., an urgent 911 call identifying an active shooter) are non-testimonial and not barred by the Confrontation Clause.

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The Criminal Procedural Continuum: Arrest to Post-Conviction

The criminal justice process progresses through structured chronological phases:

+---------------------------------------------------------------------------------------------------+
|                             The Criminal Litigation Timeline                                      |
+---------------------------------------------------------------------------------------------------+
| Stage Sequence           | Core Procedural Events & Legal Standards                               |
+--------------------------+------------------------------------------------------------------------+
| 1. Arrest & Booking      | Warrantless arrest on probable cause or arrest warrant; booking,      |
|                          | fingerprinting, photographing, administrative inventory search.        |
+--------------------------+------------------------------------------------------------------------+
| 2. Initial Appearance    | Within 48 hours (*Gerstein* review); formal notice of charges;         |
|                          | advisement of rights; bail determination and pretrial release terms.   |
+--------------------------+------------------------------------------------------------------------+
| 3. Formal Charging       | Preliminary Hearing (adversarial hearing before judge to establish     |
|                          | probable cause) OR Grand Jury Indictment (ex parte secret proceeding). |
+--------------------------+------------------------------------------------------------------------+
| 4. Formal Arraignment    | Formal reading of indictment/information; defendant enters plea:       |
|                          | Not Guilty, Guilty, or Nolo Contendere (No Contest).                   |
+--------------------------+------------------------------------------------------------------------+
| 5. Pretrial Discovery    | Prosecution complies with *Brady* (exculpatory evidence) and *Giglio*  |
|    & Motion Practice     | (impeachment evidence); defense files motions to suppress evidence.   |
+--------------------------+------------------------------------------------------------------------+
| 6. Plea Bargaining       | Negotiated plea agreements; formal Rule 11 plea colloquy ensuring      |
|                          | knowing, voluntary, and intelligent waiver of constitutional rights.   |
+--------------------------+------------------------------------------------------------------------+
| 7. Criminal Trial        | Voir dire, opening statements, prosecution case-in-chief, Rule 29      |
|                          | acquittal motion, defense case, closing arguments, jury verdict.       |
+--------------------------+------------------------------------------------------------------------+
| 8. Sentencing            | Presentence Investigation Report (PSI/PSR) prepared by probation;      |
|                          | statutory ranges, mandatory minimums, restitution orders.              |
+--------------------------+------------------------------------------------------------------------+
| 9. Direct Appeal         | Appellate review of trial record for legal errors and due process.     |
+--------------------------+------------------------------------------------------------------------+
| 10. Post-Conviction /    | Collateral review under state post-conviction acts or federal writ     |
|     Habeas Corpus        | of habeas corpus (28 U.S.C. § 2254) for constitutional violations.     |
+---------------------------------------------------------------------------------------------------+

1. Pretrial Discovery: Brady & Giglio Mandates

Paralegals play a central role in managing pretrial discovery in criminal proceedings:

• Brady Material (Brady v. Maryland): The prosecution has an affirmative constitutional duty to disclose all material evidence favorable to the defense (exculpatory evidence or evidence mitigating punishment). Suppression of material favorable evidence violates due process regardless of the prosecutor's good or bad faith.
• Giglio Material (Giglio v. United States): The Brady disclosure duty extends to impeachment evidence that could undermine the credibility of prosecution witnesses—including promises of leniency, plea agreements, immunity deals, payments, or inconsistent prior statements.

2. Plea Bargaining & Rule 11 Colloquies

Over 95% of criminal convictions are resolved through plea bargaining. To be constitutionally valid, a guilty plea must be entered voluntarily, knowingly, and intelligently. The presiding judge must conduct a personal on-the-record plea colloquy (under Federal Rule of Criminal Procedure 11 or state equivalent), confirming that the defendant understands: the nature of the charges, mandatory minimum and maximum sentences, and the fact that a guilty plea permanently waives the right to a jury trial, the right to confront witnesses, and the privilege against self-incrimination.

3. Federal Habeas Corpus (28 U.S.C. § 2254)

Following the exhaustion of all state direct appeals and state post-conviction remedies, a convicted state prisoner may file a federal petition for a writ of habeas corpus under 28 U.S.C. § 2254. Federal habeas review is strictly limited to determining whether the petitioner's state custody violates the Constitution, laws, or treaties of the United States.