Dickerson v. United States reaffirmed Miranda as a constitutional rule that Congress could not override by statute. The decision kept the Miranda warning framework in place for custodial interrogation and rejected an attempt to replace it with a voluntariness-only test.
Congress enacted Section 3501 after Miranda, making voluntariness the test for admitting confessions in federal prosecutions. Dickerson forced the Court to decide whether that statute displaced Miranda or whether Miranda was a constitutional rule beyond congressional override.
May Congress override Miranda by statute and make voluntariness the sole test for admitting statements from custodial interrogation?
Miranda announced a constitutional rule that Congress may not supersede by statute. 18 U.S.C. 3501, which tried to make voluntariness the sole test for admitting custodial statements in federal court, could not override Miranda's warning requirements.
How the justices lined up in this decision.
Dickerson preserved Miranda as a constitutional rule governing custodial interrogation in state and federal courts. It kept standardized warnings at the center of police practice and limited Congress's ability to replace the Court's constitutional criminal-procedure rules by ordinary statute.
Chief Justice Rehnquist wrote for a seven-justice majority joined by Justices Stevens, O'Connor, Kennedy, Souter, Ginsburg, and Breyer. Justice Scalia dissented, joined by Justice Thomas.