law enforcement officer
(c) Nothing in this section shall be construed so as to deter any law enforcement officer from lawfully carrying out the duties of his office; and no law enforcement officer shall be considered to be in violation of this section for lawfully carrying out the duties of his office or lawfully enforcing ordinances and laws of the United States, the District of Columbia, any of the several States, or any political subdivision of a State. For purposes of the preceding sentence, the term “law enforcement officer” means any officer of the United States, the District of Columbia, a State, or political subdivision of a State, who is empowered by law to conduct investigations of, or make arrests because of, offenses against the United States, the District of Columbia, a State, or a political subdivision of a State.