[114] Polk also chose Mississippi Senator Walker as Secretary of the Treasury and New York's William Marcy as Secretary of War. The members worked well together, and few replacements were necessary. One reshuffle was required in 1846 when Bancroft, who wanted a diplomatic posting, became U.S. minister to Britain.[117]
In his last days in office President Tyler sought to complete the annexation of Texas. After the Senate had defeated an earlier treaty that required a two-thirds majority, Tyler urged Congress to pass a joint resolution, relying on its constitutional power to admit states.[118] There were disagreements about the terms under which Texas would be admitted and Polk became involved in negotiations to break the impasse. With Polk's help, the annexation resolution narrowly cleared the Senate.[118] Tyler was unsure whether to sign the resolution or leave it for Polk and sent Calhoun to consult with Polk, who declined to give any advice. On his final evening in office, March 3, 1845, Tyler offered annexation to Texas according to the terms of the resolution.