John Paul Stevens,
Pennsylvania v. Union Gas Company…
“ With respect to the former-the legitimate scope of the Eleventh Amendment limitation on federal judicial power-I do not believe Congress has the power under the Commerce Clause, or under any other provision of the Constitution, to abrogate the States' immunity. A statute cannot amend the Constitution. With respect to the latter-the judicially created doctrine of state immunity even from suits alleging violation of federally protected rights-I agree that Congress has plenary power to subject the States to suit in federal court. ”
