He responded to the unprecedented political and military crisis as commander-in-chief by exercising unprecedented authority. He expanded his war powers, imposed a blockade on Confederate ports, disbursed funds before appropriation by Congress, suspended habeas corpus, and arrested and imprisoned thousands of suspected Confederate sympathizers. Lincoln gained the support of Congress and the northern public for these actions. Lincoln also had to reinforce Union sympathies in the border slave states and keep the war from becoming an international conflict.[188]

Running the Machine: an 1864 political cartoon satirizing Lincoln's administration – featuring William Fessenden, Edwin Stanton, William Seward, Gideon Welles, Lincoln, and others
It was clear from the outset that bipartisan support was essential to success, and that any compromise alienated factions on both sides of the aisle, such as the appointment of Republicans and Democrats to command positions. Copperheads criticized Lincoln for refusing to compromise on slavery. The Radical Republicans criticized him for moving too slowly in abolishing slavery.[189] On August 6, 1861, Lincoln signed the Confiscation Act that authorized judicial proceedings to confiscate and free slaves who were used to support the Confederates. The law had little practical effect, but it signaled political support for abolishing slavery.