What was the biggest conflict or controversies if any during president Zachary Taylor's?

One of the biggest controversies during President Zachary Taylor's administration was the debate over the extension of slavery into the newly acquired territories from the Mexican-American War, particularly California and New Mexico. Taylor, a slave owner himself, opposed the expansion of slavery into these territories, advocating for their admission as free states. This stance angered Southern leaders and contributed to rising tensions between the North and South, setting the stage for further sectional conflicts. His sudden death in 1850 cut short his efforts to address these divisive issues.