Millard Fillmore, a member of the Whig party, was the 13th President of the United States (1850-1853) and the last President not to be affiliated with a political party at the time of his inauguration. Fillmore assumed office following the death of President Zachary Taylor and faced many challenges during his presidency, including the debate over slavery that ultimately led to the Compromise of 1850.
During his presidency, Fillmore signed the Fugitive Slave Act into law, which required runaway slaves to be returned to their owners. This decision was controversial and further deepened the divide between the North and the South on the issue of slavery. Fillmore also oversaw the opening of Japan to trade with the United States, a significant diplomatic achievement.
Despite his efforts to navigate the turbulent political landscape of his time, Fillmore was not nominated for a second term and was succeeded by Franklin Pierce. After leaving office, Fillmore remained active in politics, running for president again in 1856 as a candidate for the anti-immigrant Know Nothing Party.