John Tyler was the 10th president of the United States from 1841-1844. As a Whig, his plans and vetoes ruined his relationship with the Whig party leaders Webster and Clay. Some key events during his presidency included vetoing bills for a third national bank and higher tariffs, resolving a border dispute between Maine and Canada known as the Aroostook War, negotiating the Webster-Ashburton Treaty, and annexing Texas in 1845 over congressional objections.