American President A Reference Resource Key Events in the Presidency of John Tyler 1841 April 4, 1841 After the death of President William Henry Harrison, Vice President John Tyler assumes the presidency. He is the first ever to do so, setting the precedent for presidential succession. September 11, 1841 Tyler's entire cabinet, with the exception of Secretary of State Daniel Webster, resigns after Tyler vetoes a second bill for the establishment of a National Bank of the United States. 1842 March 1842 The Massachusetts Supreme Court establishes the legality of labor unions, including the right for workers to strike, in the case of Commonwealth v. Hunt. August 9, 1842 The signing of the Webster-Ashburton Treaty normalizes U.S.-British relations by adjusting the Maine-Brunswick border, settling boundary issues around western Lake Superior, and resurveying numerous smaller borders. 1844-1845 In the congressional elections, the Democrats gain a majority over the Whigs in the House of Representatives, while at the same time defending their majority in the Senate. 1844 April 12, 1844 The Texas Annexation Treaty is signed by the United States and the Republic of Texas. May 24, 1844 The first telegraph line in the United States is completed between Washington, D.C., and Baltimore. June 8, 1844 The Texas Annexation Treaty fails to gain the required two-thirds majority in the Senate amid controversy over the western expansion of the nation. June 26, 1844 President John Tyler marries Miss Julia Gardiner, becoming the first President to wed while in office. December 4, 1844 James K. Polk is elected as the eleventh President of the United States on promises to "re-annex" Texas and "re-occupy" Oregon. 1845 February 28, 1845 Congress passes the joint resolution (which only requires a simple majority by both houses) submitted by Tyler to annex Texas. The Republic of Texas votes to accept annexation on June 23. March 3, 1845 Florida is admitted as a slave state, making it the twenty-seventh state in the Union. March 4, 1845 James K. Polk is inaugurated as the eleventh President of the United States.