2 U.S.C. § 40 : US Code - Section 40: Deductions for withdrawal

Search 2 U.S.C. § 40 : US Code - Section 40: Deductions for withdrawal

When any Member or Delegate withdraws from his seat and does not
return before the adjournment of Congress, he shall, in addition to
the sum deducted for each day, forfeit a sum equal to the amount
which would have been allowed by law for his mileage in returning
home; and such sum shall be deducted from his compensation, unless
the withdrawal is with the leave of the Senate or House of
Representatives respectively.