5 U.S.C. § 3301 - U.S. Code - Unannotated Title 5. Government Organization and Employees § 3301. Civil service; generally

(1) prescribe such regulations for the admission of individuals into the civil service in the executive branch as will best promote the efficiency of that service;

(2) ascertain the fitness of applicants as to age, health, character, knowledge, and ability for the employment sought; and

(3) appoint and prescribe the duties of individuals to make inquiries for the purpose of this section.