For the purpose of this subchapter, the term “law enforcement officer” means—

(1) a law enforcement officer within the meaning of section 5541(3) and to whom the provisions of chapter 51 apply;

(2) a member of the United States Secret Service Uniformed Division;

(3) a member of the United States Park Police;

(4) a special agent in the Diplomatic Security Service;

(5) a probation officer (referred to in section 3672 of title 18); and

(6) a pretrial services officer (referred to in section 3153 of title 18).

(Added Pub. L. 101–509, title V, § 529 [title IV, § 408(a)], Nov. 5, 1990, 104 Stat. 1427, 1467; amended Pub. L. 102–141, title VI, § 627, Oct. 28, 1991, 105 Stat. 874; Pub. L. 102–378, § 2(21), Oct. 2, 1992, 106 Stat. 1348.)