Briefly explain one way Jackson's power was challenged during his presidency

His vice president John C. Calhoun was one of his most vocal critics. Calhoun and other politician critized president Andrew Jackson for some actions of the 1812 war with Britain - Jackson was a war hero and he was widely admired by the people for his brave and victorious command-. They critized Jackson for the invasion of Florida, where he captured several Spanish forts and took territories for the United States, and for also capturing two British subjects and hanging them. So, his war record was often the target of politically-motivated criticism. In 1830, Calhoun openly sided with South Carolina in a dispute about a tariff with the federal government.