by John Marshall Harlan, Burton v. United States (202 U.S. 344…
“ A Senator cannot claim immunity from legislation directed to that end, simply because he is a member of a body which does not owe its existence to Congress, and with whose constitutional functions there can be no interference. If that which is enacted in the form of a statute is within the general sphere of legitimate legislative, as distinguished from executive and judicial, action, and not forbidden by the Constitution, it is the supreme law of the land, supreme over all in public stations as well as over all the people. ”
