When Andrew Jackson became president of the United States in 1829, his government took a hard line. Jackson abandoned the policy of his predecessors of treating different Indian groups as separate nations. Instead, he aggressively pursued plans against all Indian tribes which claimed constitutional sovereignty and independence from state laws, and which were based east of the Mississippi River. They were to be removed to reservations in Indian Territory west of the Mississippi (now Oklahoma), where their laws could be sovereign without any state interference. At Jackson’s request, the United States Congress opened a debate on an Indian Removal Bill.