The Supreme Court exercises far less constitutional authority in American law and practice than one would gather from reading judicial opinions, presidential speeches, or the standard tomes for and against judicial supremacy. Lower federal court judges, state court justices, federal and state elected officials, persons charged with administering the law, and ordinary citizens often have the final say on particular constitutional controversies or exercise temporary constitutional authority in ways that have more influence on the parties to that controversy than the eventual Supreme Court decision. In many instances, Supreme Court doctrine sanctions or facilitates the exercise of independent constitutional authority by persons other than Supr...