Lucius Quintus Cincinnatus Lamar, Pennoyer v. McConnaughy — Opinion of the Court
“ It is well settled that no action can be maintained in any federal court by the citizens of one of the states against a state, without its consent, even though the sole object of such suit be to bring the state within the operation of the constitutional provision which provides that 'no state shall pass any law impairing the obligation of contracts.' This immunity of a state from suit is absolute and unqualified, and the constitutional provision securing it is not to be so construed as to place the state within the reach of the process of the court. ”
