Mahlon Pitney, Ex Parte New York (256 U.S. 490…
“ That a state may not be sued without its consent is a fundamental rule of jurisprudence having so important a bearing upon the construction of the Constitution of the United States that it has become established by repeated decisions of this court that the entire judicial power granted by the Constitution does not embrace authority to entertain a suit brought by private parties against a state without consent given; not one brought by citizens of another state, or by citizens or subjects of a foreign state, because of the Eleventh Amendment ”
