2/3 vote of the senators that are present about 66.6%
They passed the Espionage and Sedition Acts which allowed the government to arrest and fine anyone speaking out against the war.
4th Amendment uses deadly force i believe
The emancipation proclamation went into effect on January 1st 1863. It stated that all people with slaves had to be free, that was only with the rebellious states. These rebellious states were the ones in the South. So that is how the South was affected by this. They had to give up there slaves, but there slaves were there labor and they had to learn how to do without.
