Walder v. United States — Study Notes

In Walder v. United States, the Supreme Court addressed the tension between the exclusionary rule and the impeachment of defendants' credibility in criminal proceedings. The Court emphasized that while evidence obtained through unlawful searches is inadmissible for proving guilt in the main case, such evidence can be introduced to challenge a defendant’s credibility if they contradict it while testifying. This case reinforces the principle that a defendant who chooses to testify assumes the risk of having their credibility impeached by prior unlawful evidence. Professors may highlight how this decision balances individual rights with the integrity of the judicial process, noting the broader implications on how defendants might approach testifying in their defense given the possibility of impeachment based on prior unlawful evidence.

1. 1Explain why the Court decided to allow the impeachment of Walder’s credibility using unlawfully obtained evidence.
2. 2Discuss the implications of this case on the right to testify for defendants.
3. 3What distinguishes impeachment evidence from evidence used to prove guilt in a criminal case?
4. 4How does this case integrate with the broader framework of the Fourth Amendment?
5. 5What would be the potential consequences if the Supreme Court ruled against the use of such evidence for impeachment?
6. 6Explore the dissenting opinions, if any, regarding the Court's ruling.

• The implications of allowing unlawfully obtained evidence in the courtroom regardless of the main case's exclusionary rule.
• Potential variations in state vs. federal interpretations of Fourth Amendment protections.
• How this ruling may affect defendants’ decisions about whether to testify in their own defense.