; (2) the term State government includes each of the several States, the government of the District of Columbia, the Commonwealth of Puerto Rico, the United States Virgin Islands, Guam, American Samoa, the Commonwealth of the Northern Mariana Islands, and any other territory or possession of the United States; and (3) the term tribal government means the government of an Indian tribe, as that term is defined in section 4(e) of the Indian Self-Determination Act ( 25 U.S.C. 450b(e) ). . (b) Technical and conforming amendments (1) The table of chapters for part IV of title 39, United States Code, is amended by adding after the item relating to chapter 36 the following: 37. Postal Service program for State, local, and tribal governments 3701 . (2) Section 404(e) of title 39, United States Code, is amended— (A) in paragraph (2), by inserting after subsection, the following: or any property, products, or services authorized to be provided under chapter 37, ; and (B) by adding at the end the following: (6) Nothing in this section shall be construed to prevent the Postal Service from providing property, products, or services that are expressly authorized by chapter 37. .