5 U.S.C. § 5352
Stipends
The head of each agency, and the District of Columbia Council with respect to the government of the District of Columbia, shall fix the stipends of its student-employees. The stipend may not exceed the applicable maximum prescribed by the Office of Personnel Management.
( Pub. L. 89–554 , Sept. 6, 1966 , 80 Stat. 472 ; Pub. L. 90–623, § 1(7) , Oct. 22, 1968 , 82 Stat. 1312 ; Pub. L. 95–454, title IX, § 906(a)(2) , Oct. 13, 1978 , 92 Stat. 1224 .)