48 U.S.C. § 1704 — Concurrent jurisdiction; exceptions for national defense purposes

(a) Except as otherwise provided by law, the governments of the Virgin Islands, Guam, and American Samoa, must have concurrent civil and criminal legal authority with the United States with regard to property owned, reserved, or controlled by the United States in the Virgin Islands, Guam, and American Samoa respectively. A judgment of conviction or acquittal on the merits under the laws of Guam, the Virgin Islands, or American Samoa must be a bar to any prosecution under the criminal laws of the United States for the same act or acts, and a judgment of conviction or acquittal on the merits under the laws of the United States must be a bar to any prosecution under the laws of Guam, the Virgin Islands, or American Samoa for the same act or acts. (b) even if the provisions of subsection (a) of this section, the President can from time to time exclude from the concurrent legal authority of the government of Guam people found, acts performed, and offenses committed on the property of the United States which is under the control of the Secretary of Defense to such extent and in such circumstances as he finds required in the interest of the national defense.