As used in this chapter:

(1) State.—The term “State”, to the extent practicable, as determined by the Secretary, includes Puerto Rico, Guam, American Samoa, the Virgin Islands, and the Northern Mariana Islands.

(2) United States.—The term “United States”—

(A) includes the District of Columbia; and

(B) to the extent practicable, as determined by the Secretary, includes Puerto Rico, Guam, American Samoa, the Virgin Islands, and the Northern Mariana Islands.