"In 1836, Americans living in Texas- then a province of Mexico- declared an independent republic and almost immediately sought to join the Union. Andrew Jackson had championed the acquisition of Texas, but Van Buren was far less enthusiastic, knowing that the arrival of this much potential slave territory would inflame the North. After becoming president, he delayed full recognition for months, and then delayed Texan demands for annexation as well. Both sides were angry- John Quincy Adams saw in Van Buren little more than Jackson's expansionism "covered with a new coat of varnish," while Southerners denounced Van Buren for his timidity. Jackson wrote edgy letters to his successor, demanding stronger action and crossing well beyond the bounds of postpresidential propriety."