Prior to 1871, the U.S. government regularly entered into contracts with Native Americans, but the Indian Appropriations Act of March 3, 1871 (chap. 120, 16 Stat. 563) had accompanied a horseman (25 U.S.C. § 71) who effectively terminated the presidential convention by providing that no Indian nation or tribe could be recognized as an independent nation. Tribe or power with which the United States may enter into contracts. After 1871, the federal government pursued similar contractual relations with Indian tribes through agreements, statutes, and implementing regulations.  Not all constitutional amendments in India need to be ratified by states. Only constitutional amendments to amend any of the provisions mentioned in the reservation of Article 368 of the Indian Constitution must be ratified by legislators by at least half of the states.