Secession
With Lincoln's victory, talk of secession and disunion reached a boiling point, putting the burden on Buchanan to address it in his final speech to Congress on December 10. In his message, which was anticipated by both factions, Buchanan denied the right of states to secede but maintained the federal government was without power to prevent them. He placed the blame for the crisis solely on "intemperate interference of the Northern people with the question of slavery in the Southern States," and suggested that if they did not "repeal their unconstitutional and obnoxious enactments ... the injured States, after having first used all peaceful and constitutional means to obtain redress, would be justified in revolutionary resistance to the Government of the Union." Buchanan's only suggestion to solve the crisis was "an explanatory amendment" affirming the constitutionality of slavery in the states, the fugitive slave laws, and popular sovereignty in the territories. His address was sharply criticized both by the North, for its refusal to stop secession, and the South, for denying its right to secede. Five days after the address was delivered, Treasury Secretary Howell Cobb resigned, as his views had become irreconcilable with the president's. Even as the formation of the Confederacy by the secessionist states became increasingly apparent in the winter of 1860, the president continued to surround himself with Southerners and ignore the Republicans.
South Carolina, long the most radical Southern state, seceded from the Union on December 20, 1860. However, Unionist sentiment remained strong among many in the South, and Buchanan sought to appeal to the Southern moderates who might prevent secession in other states. He met with South Carolinian commissioners in an attempt to resolve the situation at Fort Sumter, which federal forces remained in control of despite its location in Charleston, South Carolina. Buchanan saw Congress, not himself, as responsible for finding a solution to the secession crisis. As a compromise for the southern states, Buchanan envisioned the adoption of amendments to the United States Constitution that would guarantee the right to slavery in the southern states and territories and strengthen the right of slave owners to reclaim escaped slaves as property in the northern states.
He refused to dismiss Interior Secretary Jacob Thompson after the latter was chosen as Mississippi's agent to discuss secession, and he refused to fire Secretary of War John B. Floyd despite an embezzlement scandal. Floyd ended up resigning, but not before sending numerous firearms to Southern states, where they eventually fell into the hands of the Confederacy. Despite Floyd's resignation, Buchanan continued to seek the advice of counselors from the Deep South, including Jefferson Davis and William Henry Trescot. Buchanan's friend Rose O'Neal Greenhow took advantage of the proximity to the president and spied for the Confederacy, which had already established a sophisticated network for gathering information from its eventual opponent before its formation.
Efforts were made in vain by Sen. John J. Crittenden of Kentucky, Rep. Thomas Corwin of Ohio, and former president John Tyler to negotiate a compromise to stop secession, with Buchanan's support. Failed attempts were also made by a group of governors meeting in New York. Buchanan secretly asked President-elect Lincoln to call for a national referendum on the issue of slavery, but Lincoln declined. In December 1860, when the second session of the 36th Congress was convened, The Committee of Thirty-Three was established by the House of Representatives to prevent further states from seceding. They proposed the Corwin Amendment, which would bar Congress from interfering with slavery in states. Despite opposition from Republicans, it passed both houses of Congress and was proposed to states for ratification, but it was never ratified by the requisite number of states.
Despite the efforts of Buchanan and others, six more slave states seceded by the end of January 1861. Buchanan replaced the departed Southern cabinet members with John Adams Dix, Edwin M. Stanton, and Joseph Holt, all of whom were committed to preserving the Union. When Buchanan considered surrendering Fort Sumter, the new cabinet members threatened to resign, and Buchanan relented. On January 5, Buchanan decided to reinforce Fort Sumter, sending the Star of the West with 250 men and supplies. However, the message authorizing Major Robert Anderson to provide covering fire did not reach Fort Sumter in time, forcing the Star of the West to return North without delivering troops or supplies. Buchanan chose not to respond to this act of war, and instead sought to find a compromise to avoid secession. He received a March 3 message from Anderson, that supplies were running low, but the response became Lincoln's to make, as the latter succeeded to the presidency the next day.