2 U.S. Code § 5307
2 U.S. Code § 5307 is about Certification of salary and mileage accounts. It is under Subchapter I (Member Pay) of Chapter 53 (House of Representatives Members) of Title 2 (The Congress) of the Code.
Salary and mileage accounts of Representatives and Delegates shall be certified by the Speaker of the House of Representatives; and such certificates shall be conclusive upon all the departments and officers of the Government.