Whoever kills (1) any individual who is the President of the United States, the President-elect, the Vice President, or, if there is no Vice President, the officer next in the order of succession to the Office of the President of the United States, the Vice President-elect, or any person who is acting as President under the Constitution and laws of the United States, or (2) any person appointed under section 105(a)(2)(A) of title 3 employed in the Executive Office of the President or appointed under section 106(a)(1)(A) of title 3 employed in the Office of the Vice President, shall be punished as provided by sections 1111 and 1112 of this title.