The Wilmot Proviso was a legislative proposal introduced by Congressman David Wilmot in 1846, during the contentious period of westward expansion in the United States. The proviso sought to ban slavery in any territory acquired from Mexico as a result of the Mexican-American War. Although the proposal never passed in the Senate, it ignited significant political and sectional tensions over the issue of slavery, contributing to the growing divides between the North and the South.
a. Relationship to Abraham Lincoln's Position on Slavery
Abraham Lincoln, who emerged as a prominent political figure in the late 1850s, was influenced by the debates surrounding the Wilmot Proviso. While he did not initially focus exclusively on the issue of slavery, he opposed the expansion of slavery into the new territories. Lincoln's position can be seen as aligned with the spirit of the Wilmot Proviso, advocating for limiting the spread of slavery rather than outright abolition. He believed that slavery was morally wrong but also feared that its expansion would undermine free labor and free men.
Lincoln's views were ultimately crystallized in his commitment to preventing the extension of slavery into the territories, which he articulated during debates with Stephen A. Douglas in 1858. His stance on the matter helped unify the Republican Party against the expansion of slavery, contributing to the political discourse that would shape the national debate heading toward the Civil War.