(1) An Executive agency as defined in section 105 of title 5, United States Code, including the U.S. Postal Service and the U.S. Postal Rate Commission;
(2) A military department, as defined in section 102 of title 5, United States Code;
(3) An agency or court in the judicial branch, including a court as defined in section 610 of title 28, United States Code, the District Court for the Northern Mariana Islands, and the Judicial Panel on Multidistrict Litigation;
(4) An agency of the legislative branch, including the U.S. Senate and the U.S. House of Representatives; and
(5) Other independent establishments that are entities of the Federal Government.