Whether Thompkins invoked his Miranda right to remain silent by remaining largely silent during the interrogation.
Holding
No. A suspect must unambiguously invoke the right to remain silent, and Thompkins’ silence and sporadic responses did not do so.
Reasoning
The Court extended Davis v. United States’ clear-statement rule for invoking the right to counsel to invocation of the right to remain silent. Both rights protect the privilege against compelled self-incrimination and require police to stop questioning once invoked. The Court saw no principled reason to apply a different standard to one right than to the other.
An unambiguous-invocation rule gives police an objective, workable standard. If ambiguous conduct or silence itself required the police to stop, officers would have to guess at a suspect’s intent and risk suppression whenever they guessed incorrectly. The Court concluded that the Miranda warnings, when understood, adequately protect a suspect who wants to end questioning.
Thompkins never said that he wanted to remain silent, did not want to speak with police, or wanted a lawyer. His largely silent conduct therefore did not clearly communicate an intent to cut off questioning. Had he made a simple statement to that effect, the police would have been required to honor it.