John Stuart Mill,
Considerations on Representative Government
(1861)
“ There must be a Supreme Court of Justice, and a system of subordinate courts in every state of the Union, before whom such questions shall be carried, and whose judgment on them, in the last stage of appeal, shall be final. Every state of the Union, and the federal government itself, as well as every functionary of each, must be liable to be sued in those courts for exceeding their powers, or for non-performance of their federal duties, and must in general be obliged to employ those courts as the instrument for enforcing their federal rights. ”
