I think [that] '[t]he judicial Power of the United States' conferred upon this Court 'and such inferior courts as Congress may establish', must be deemed to be the judicial power as understood by our common-law tradition. That is the power 'to say what the law is', Marbury v. Madison, 1 Cranch 137, 177 (1803), not the power to change it.

James M. Beam Distilling Co. v. Georgia, 501 U.S. 529 (1991) (concurring)

James M. Beam Distilling Co. v. Georgia, 501 U.S. 529 (1991)[law.cornell.edu]