In his first address to Congress at a special session on June 1, 1841, Tyler laid the groundwork for the annexation of Texas by announcing his intention to pursue an expansionist agenda to maintain the balance between national and national authority and to protect American institutions, including slavery, in order to avoid sectoral conflicts.  Tyler`s closest advisers advised him that securing Texas would secure him a second term in the White House, and it became a deeply personal obsession with the president, who considered the acquisition of Texas „the primary objective of his administration.”  Tyler postponed direct action in Texas to work closely with his Minister of Foreign Affairs, Daniel Webster, on other urgent diplomatic initiatives.  With the Webster-Ashburton Treaty ratified in 1843, Tyler was ready to make the annexation of Texas his „top priority.”  Virginia Congressman Thomas W. Gilmer was authorized by the government to form the annexation of the American electorate. In a widely held open letter, conceived as an announcement of the executive`s plans for Texas, Gilmer described Texas as the panacea for the North-South conflict and an economic blessing for all business interests. The issue of slavery, however divisive, would be left to the states to decide in accordance with the U.S. Constitution. According to Tyler, inner tranquility and national security would flow from an annexed Texas; A Texan abandonment outside US jurisdiction would endanger the Union.  Tyler skillfully arranged the resignation of his anti-annexation minister, Daniel Webster, and on June 23, 1843 appointed Abel P. Upshur, a legal defender of the states of Virginia, who campaigned strongly for the annexation of Texas. This cabinet change signaled Tyler`s intention to aggressively follow the annexation of Texas. President John Tyler, who concluded that Texas should not become a British satellite, proposed annexation. After some sparring, Houston approved the negotiation of an annexation treaty, which was rejected by the U.S. Senate in June 1844. Annexation then became a theme in the presidential elections of 1844; James K. Polk, who supported the annexation, was elected. Tyler, who felt the need to hurry around the British plans, proposed to obtain annexation by a joint resolution that would offer the State of Texas, under certain conditions, Texas` acceptance of the merger. The United States Congress passed the annexation resolution on February 28, 1845, and Andrew Jackson Donelson went to Texas to lobby for acceptance of the offer. The Texans were hesitant to pursue a treaty between the United States and Texas without a written commitment to U.S. military defense, as a global military attack by Mexico seemed likely when negotiations were made public.