The Emancipation Proclamation was released on January 1, 1863 with the affect of "All persons held as slaves within any State or any designated part of State, the people whereof shall then be in rebellion against the United Stated shall be then, thenceforward, and forever, free." The Emancipation Proclamation did it's justice on boarder states and Confederate states, it didn't free a slave in America but it did have a turning point.
The Emancipation Proclamation was not under the Constitution. During 1864-1865, the Republican Congress took The Emancipation Proclamation and turned it into the The Thirteenth Amendment. The Amendment was passed by the Senate on April 8, 1864. The Amendment died in the U.S. House of Representatives but the presidential election of 1864 brought redemption to the Amendment. The Amendment was passed in the U.S. House of Representatives by a 119 to 56 vote. The Amendment went to ratification on December 6, 1856.
The Thirteenth Amendment was issued on January 31, 1856. The Thirteenth Amendment: "Neither slavery nor involuntary servitude, except as a punishment for crime whereof the party shall have been duly convicted, shall exist within the United States, or any place subject to their jurisdiction." The Thirteenth Amendment completely abolished slavery. The US Constitution states that slavery is forbidden and forced labor will be resulted as a punishment for a severe crime.