Investigation Procedures & Methods Flashcards

Which of the following best describes the purpose of a 'wall' (information barrier) in FBI counterintelligence and counterterrorism investigations before the PATRIOT Act?

Answer: It restricted sharing of FISA-derived intelligence with criminal investigators to protect surveillance authority

Pre-PATRIOT Act 'wall' procedures limited sharing of FISA intelligence with criminal case agents to prevent FISA from being used as a workaround for criminal search warrant requirements.

An FBI agent conducting a lawful search finds evidence of a completely unrelated federal crime not covered by the warrant. To legally seize this evidence, the agent relies on:

Answer: The plain view doctrine

Plain view allows seizure of evidence outside the warrant's scope when agents are lawfully present, the object is in plain view, and its incriminating character is immediately apparent.

In gang and organized crime investigations, what is the primary advantage of using the RICO statute (18 U.S.C. § 1962)?

Answer: It permits prosecution of an entire criminal enterprise and its leadership based on a pattern of racketeering activity

RICO allows federal prosecutors to charge the organization as a whole and hold leaders accountable for the enterprise's criminal pattern, even without direct participation in each act.

During an active shooter / hostage scenario, which FBI unit has primary tactical authority once the situation exceeds local law enforcement capacity?

Answer: Crisis Negotiation Unit in coordination with the Hostage Rescue Team (HRT)

The FBI's HRT provides tactical intervention capability while Crisis Negotiation Unit specialists work to resolve the situation through negotiation, operating in concert.

A subject consents to a search of their home but then revokes consent before agents have completed the search. Agents must:

Answer: Immediately cease the search unless probable cause exists for a warrant

Consent can be withdrawn at any time, and upon revocation agents must stop the search immediately unless an independent legal basis such as probable cause exists.

What is the purpose of the FBI's 'Elsur' (Electronic Surveillance) tracking system in an investigation?

Answer: It tracks all authorized electronic surveillance authorizations, renewals, and results for legal compliance and oversight

Elsur is a centralized record-keeping system that logs all electronic surveillance approvals and activity to ensure proper legal authorization and congressional reporting compliance.

When interviewing a juvenile witness in a federal investigation, which consideration is MOST critical for the admissibility of statements?

Answer: Parental or guardian consent and presence must be secured, and the juvenile's capacity to understand must be established

Courts scrutinize juvenile interviews closely; ensuring parental or guardian involvement and confirming the juvenile understands the nature of the questioning protects the voluntariness and admissibility of statements.