48 U.S.C. § 2191

1. (1)to limit the authority of Congress to exercise legislative authority over the territories pursuant to Article IV, section 3 of the Constitution of the United States;
2. (2)to authorize the application of section 2124(f) of this title (relating to issuance of subpoenas) to judicial officers or employees of territory courts;
3. (3)to alter, amend, or abrogate any provision of the Covenant To Establish a Commonwealth of the Northern Mariana Islands in Political Union With the United States of America (48 U.S.C. 1801 et seq.); or
4. (4)to alter, amend, or abrogate the treaties of cession regarding certain islands of American Samoa (48 U.S.C. 1661).