Several proposals to keep the Union intact are proposed, but none seem to be popular enough for both North and South to support.

Exploring the most important 55 months in American history
Several proposals to keep the Union intact are proposed, but none seem to be popular enough for both North and South to support.
The last annual message of James Buchanan’s presidency acknowledges that North and South are “now arrayed against each other.” He offers suggestions on how to resolve the crisis, but he leaves both sections dissatisfied.
September 5, 1863 – Charles Francis Adams, U.S. minister to Great Britain, threatened war unless the British stopped clandestinely building warships for the Confederacy. Adams
January 1, 1863 – President Abraham Lincoln signed the executive order emancipating all slaves in states and parts of states controlled by the Confederacy. The
July 31, 1862 – Charles Francis Adams, U.S. minister to Great Britain, urged British Foreign Secretary Lord John Russell to prohibit the newly constructed screw
July 28, 1862 – Confederates tried currying favor with France, and Great Britain suffered a severe economic downturn due to the lack of southern cotton.