(a) (1) The Secretary may establish residencies and internships. The Secretary may appoint qualified persons to such positions without regard to civil service or classification laws, rules, or regulations. (2) For the purposes of this section: (A) The term "internship" includes the equivalency of an internship as determined in accordance with regulations which the Secretary shall prescribe. (B) The term "intern" means a person serving an internship. (b) The Secretary may prescribe the conditions