Whether Supreme Court precedent clearly established, for AEDPA habeas purposes, that a prisoner is always in Miranda custody when removed from the general prison population and questioned privately about conduct that occurred outside prison.
Holding
No. The Court’s precedents did not clearly establish that categorical rule, so the Sixth Circuit could not grant habeas relief on that basis under 28 U.S.C. §2254(d)(1).
Reasoning
AEDPA permits relief only when a state court decision conflicts with, or unreasonably applies, clearly established federal law as determined by the Supreme Court. Clearly established law means the Court’s holdings, not implications drawn from dicta or lower courts’ extensions of precedent.
The Sixth Circuit misread Mathis v. United States. Mathis rejected the idea that Miranda does not apply merely because an inmate is being questioned about an offense unrelated to his confinement or before a formal criminal investigation begins. It did not hold that imprisonment itself automatically creates Miranda custody.
Other cases likewise did not establish a per se prison-interrogation rule. Illinois v. Perkins expressly declined to decide whether ordinary incarceration alone constitutes Miranda custody, and Maryland v. Shatzer’s statement that no one disputed the inmate’s custody reflected the parties’ litigation position, not a holding that every incarcerated person is in Miranda custody.
Miranda itself did not make all questioning in a police station, much less all questioning of prisoners, custodial. Its protections apply when interrogation creates the inherently compelling pressures associated with custodial interrogation, and the Court has consistently required a context-specific inquiry.