1990—
Pub. L. 101–647, title XXXVI, § 3626(b), Nov. 29, 1990,
104 Stat. 4965, substituted “Clerical assistants, messengers, and private process servers” for “Clerical assistants and messengers” in item 550.
1966—
Pub. L. 89–554, § 4(c), Sept. 6, 1966,
80 Stat. 617, added chapter 35 and items 541 to 550.