2 U.S.C. § 32
Whenever there is no Vice President, the President of the Senate for the time being is entitled to the compensation provided by law for the Vice President.
(R.S. § 36.)
R.S. § 36 derived from act Aug. 16, 1856, ch. 123, § 2, 11 Stat. 48.
Compensation of Vice President, see section 104 of Title 3, The President.