1. 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, be privileged from arrest during their
attendance at the session of their respective Houses, and in going to
or returning from the same; and for any speech or debate in either
House, they shall not be questioned in any other place.
2. No senator or representative shall, during the time for which he was
elected, be appointed to any civil office under the authority of the
United States which shall have been created, or the emoluments whereof
shall have been increased, during such time; and no person holding any
office under the United States shall be a member of either House during
his continuance in office.