evidence: Many political issues separated Jackson from Calhoun, his Vice President. One was the issue of states rights. Hoping for sympathy from President Jackson, Calhoun and the other states-rights party members sought to trap Jackson into a pro-states-rights public pronouncement at a Jefferson birthday celebration in April 1832. Some of the guests gave toasts which sought to establish a connection between a states-rights view of government and nullification. Finally, Jackson's turn to give a toast came, and he rose and challenged those present, "Our Federal Union — It must be preserved." Calhoun then rose and stated, "The Union — next to our liberty, the most dear!" Jackson had humiliated Calhoun in public. The nullification crisis that would follow served as the last straw. Jackson proved that he was unafraid to stare down his enemies, no matter what position they might hold.