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1 (July 14, 2006)

handle is hein.crs/crsajhm0001 and id is 1 raw text is: Order Code RS22475
July 14, 2006
CRS Report for Congress
Received through the CRS Web
Hudson v. Michigan: The Exclusionary Rule's
Applicability to Knock-and-Announce
Violations
Alison M. Smith
Legislative Attorney
American Law Division
Summary
Since the 1980s, the United States Supreme Court has issued a series of decisions
narrowing the applicability of the exclusionary rule. As such, the exclusionary rule is
inapplicable in civil cases, grand jury proceedings, and parole revocation hearings.
Other exceptions to the exclusionary rule include inevitable or independent discovery,
attenuation, and the good-faith exception. In Hudson v. Michigan,126 S.Ct. 2159
(2006), the Court further narrowed the applicability of the exclusionary rule by finding
that the rule was not an appropriate remedy when police officers fail to wait a few
seconds after they knock and announce their presence while executing a valid search
warrant. This report summarizes the Court's decision in Hudson and will not be
updated.
Legal Background. Beginning with the U.S. Supreme Court's decisions in Weeks
v. United States' and Mapp v. Ohio,2 the mandates of the Fourth Amendment have been
enforced through the application of an exclusionary rule which generally states that
evidence illegally seized may not be used against the defendant. In Weeks, a federal agent
had conducted an illegal warrantless search for evidence of gambling in Mr. Weeks's
home. The evidence seized in the search was used at trial, and Weeks was convicted. On
appeal, the Supreme Court held that the Fourth Amendment barred the use of evidence
secured through a warrantless search. Weeks's conviction was reversed, and thus the
federal exclusionary rule was developed. In Mapp, the Court held that the exclusionary
rule should and did apply to the states. It was logically and constitutionally necessary,
wrote Justice Clark for the majority, that the exclusion doctrine - an essential part of
the right to privacy - be also insisted upon as an essential ingredient of the right to be
secure from unreasonable searches and seizures. To hold otherwise is to grant the right
1 232 U.S. 383 (1914).
2 367 U.S. 643 (1961).
Congressional Research Service + The Library of Congress

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