Answer:
In 1843, U.S. President John Tyler, got separated from the other political parties and decided to independently pursue the annexation of Texas in a bid to attain a base of popular support for another four years.
The Senate, with its wide majority, rejected the Tyler–Texas treaty. Tyler lacked the votes in the Senate for ratification of the treaty. It was defeated by a long margin in June. Before leaving the office, Tyler tried again to get their approval. This time, he got the help for the joint resolution from both the houses of Congress. Tyler managed to get the joint resolution passed by the senate on March 1, 1845, and Texas was admitted into the America on 29, December 1845.