Section 6, Clause 01
Article I. The Congress
Section 6. Rights and Disabilities of Members
Clause 1. Compensation and legal protection
Clause 2. Independence from the executive
Clause 1. Compensation and Immunities of Members
The Senators and Representatives shall receive a Compensation for their Services, to be ascertained by Law, and paid out of the Treasury of the United States. They shall in all Cases, except Treason, Felony and Breach of the Peace, beprivileged from Arrest during their Attendance at the Session of their respective Houses, and in going to and returning from the same; and for any Speech or Debate in either House, they shall not be questioned in any other Place.