Andrew Jackson became President of the United States in 1829. He advocated for Indian removal, which many criticized. On May 28, 1830, Jackson signed the Indian Removal Act, giving him authority to negotiate treaties with American Indian Tribes for the purpose of removing them from their lands to Indian territory.
Indian Removal Act, 2 May 2017, Smithsonian (click to enlarge)
"That it shall… be lawful for the president of the united states to cause so much of any territory belonging to lthe united states west of the river Mississippi … to be divided into a suitable number of districts, for reception of such tribes or nations of Indians as may choose to exchange the lands where they now reside, and remove there; and to cause each of said districts to be so described by natural or artificial marks, as to be easily distinguished from every other." -Indian Removal Act