The House Democratic Leadership retained CGL to represent it in the Supreme Court case Dickerson v. United States, on the constitutionality of Miranda rights. The issue was whether a provision of a bill passed by Congress had overturned the Supreme Court’s ruling in Miranda v. Arizona, which established the constitutionality of “Mirandizing” suspects.

In an amicus brief to the court, Jonathan Cuneo and Charles Tiefer presented “a specifically legislative viewpoint,” arguing that Court’s decades of reaffirming Miranda prevented Congress from superseding it with a mere legislative provision. The Court upheld the requirement that police read citizens’ their rights upon being arrested as a criminal suspect.