テキサス併合
The same Senate that had rejected the Tyler–Calhoun treaty by a margin of 2:1 in June 1844 reassembled in December 1844 in a short lame-duck session. (Though pro-annexation Democrats had made gains in the fall elections, those legislators – the 29th Congress – would not assume office until March 1845.) Lame-duck President Tyler, still trying to annex Texas in the final months of his administration, wished to avoid another overwhelming Senate rejection of his treaty. In his annual address to Congress on December 4, he declared the Polk victory a mandate for Texas annexation and proposed that Congress adopt a joint resolution procedure by which simple majorities in each house could secure ratification for the Tyler treaty. This method would avoid the constitutional requirement of a two-thirds majority in the Senate. Bringing the House of Representatives into the equation boded well for Texas annexation, as the pro-annexation Democratic Party possessed nearly a 2:1 majority in that chamber.