in dickerson v. u.s. the u.s. supreme court held that miranda warnings are
Dickerson v. United States Dickerson v. United States, 530 U.S. 428 (2000),[1] upheld the requirement that the Miranda warning be read to criminal suspects and struck down a federal statute that purported to overrule Miranda v. Arizona (1966).
United States v. Alvarez United States v. Alvarez, 567 U.S. 709 (2012), is a United States Supreme Court case in which the Court struck down the Stolen Valor Act, a federal law that criminalized false statements about having a military medal. The law had been passed as an effort to stem instances where people falsely claimed to have earned the medal in an attempt to protect the "valor" of those who really had. While a 6-3 majority of the Supreme Court agreed that the law was unconstitutional under the First Amendment's free speech protections, it could not agree on a single rationale. Four justices concluded that a statement's falsity is not enough, by itself, to exclude speech from First Amendment protection. Another two justices concluded that while false statements were entitled to some protection, the Stolen Valor Act was invalid because it could have achieved its objectives in less restrictive ways.