28 U.S.C. § 957
Clerks ineligible for certain offices
A clerk of a court or any of his deputies shall not be appointed a commissioner, master, referee or receiver in any case, unless there are special reasons requiring such appointment which are recited in the order of appointment.
( June 25, 1948, ch. 646 , 62 Stat. 926 ; Pub. L. 95–598, title II, § 234 , Nov. 6, 1978 , 92 Stat. 2667 ; Pub. L. 97–164, title I, § 122(b) , Apr. 2, 1982 , 96 Stat. 36 ; Pub. L. 98–353, title I, § 109 , July 10, 1984 , 98 Stat. 342 .)