October Term 2003 · Docket 02-1371

Does an early unwarned statement taint a later warned confession?

Missouri seeks to admit a later confession. The defendant argues the first unwarned statement poisoned the second.

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Missouri v. Siebert
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Argued
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Official Transcript

Verified source milestones

  1. — An official oral-argument transcript was verified.
  2. — An official oral-argument transcript was verified.

The arguments, in order

This case may have been argued more than once. Each entry below uses that session's official transcript. Later arguments do not erase earlier ones.

  1. Argument 1 ·

    What happened at the argument

    Missouri's counsel argued the later statement is admissible if preceded by warnings.

    The defendant's counsel argued the first unwarned statement taints the second.

    The Court asked about good faith mistakes and coercive pressures.

    Read the official transcript for this argument · Official argument details

    Sources used for this argument breakdown

A citizen's guide to the whole case

What this case is about

The Court must decide if a police officer's failure to give Miranda warnings before an initial statement automatically makes a subsequent warned statement inadmissible. the side that brought the case argues the later statement stands alone. the opposing side argues the first statement taints the second.

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How the case got here

The Supreme Court heard oral argument in this case on December 9, 2003.

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What each side wants

Missouri wants the Court to admit the later warned confession.

The defendant wants the Court to exclude the later confession.

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What each side says

Missouri argues an unwarned statement does not presumptively taint a later warned statement.

The defendant argues an unwarned statement cannot be used to prove guilt.

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What the justices asked

Chief Justice Rehnquist asked if a good faith mistake avoids coercive pressures.

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Why it matters

This case defines when police can use a later confession after an initial warning failure. It shapes how courts evaluate the admissibility of sequential statements. It impacts the balance between police procedure and defendant rights.

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What happens next

This article currently covers the argument record. Use the official docket link for later case activity.

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Official Court provenance

Official docket and case history · Official Supreme Court oral-argument detail page

Title and summary sources

Revision history

  1. Revision 1 · Official Transcript ·

    Correction: Rewritten to the concise citizen-facing editorial standard.

  2. Revision 2 · Official Transcript ·

    Correction: Migrated to the dated official Court activity contract without model use.

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