Final answer:
Andrew Jackson was the President during the Nullification Crisis of 1828, a conflict arising from the Tariff of 1828 and resulting in South Carolina's challenge to federal authority.
Step-by-step explanation:
The President during the Nullification Crisis of 1828 was Andrew Jackson. This period in history is marked by the divide in Jackson's administration over the Tariff of 1828, also known as the 'tariff of abominations.' The crisis escalated when Vice President John C. Calhoun, who was from South Carolina, penned his 'South Carolina Exposition and Protest,' arguing for the right of states to nullify federal laws they deemed unconstitutional. Despite protests and the assertion of states' rights by proponents of nullification, President Jackson stood firm in upholding federal law, leading to South Carolina passing the Ordinance of Nullification in response to the federal tariffs. However, the crisis was eventually defused with the enactment of the Compromise Tariff Act of 1833 and the Force Bill, which allowed Jackson to use military force if necessary to enforce federal laws.