Amendment XXVII
No law, varying the compensation for the services of the Senators and Representatives, shall take effect, until an election of Representatives shall have intervened.
Written in the late 1700s, finally ratified in 1992. Read about it here
Which congress immediately undermined by making their pay raises automatic. How incredibly typical of them.
BTW: Brown rocks. I'd pay good money to see her on the court, or as president for that matter.