Coverage
The Proclamation applied in only ten states that were still in rebellion in 1863, and thus did not cover the nearly 500,000 slaves in the slave-holding border states (Missouri, Kentucky, Maryland or Delaware) which were Union states — those slaves were freed by separate state and federal actions. The state of Tennessee had already mostly returned to Union control, so it was not named and was exempted. Virginia was named, but exemptions were specified for the 48 counties then in the process of forming the new state of West Virginia, and seven additional counties and two cities in the Union-controlled Tidewater region. Also specifically exempted were New Orleans and 13 named parishes of Louisiana, all of which were also already mostly under Federal control at the time of the Proclamation. These exemptions left unemancipated an additional 300,000 slaves.
The Emancipation Proclamation has been ridiculed, notably in an influential passage by Richard Hofstadter for "freeing" only the slaves over which the Union had no power. These slaves were freed due to Lincoln's "war powers", this act cleared up the issue of contraband slaves. It automatically clarified the status of over 100,000 slaves. In fact 20,000 to 50,000 were freed the day it went into effect in parts of nine of the ten states to which it applied (Texas being the exception). In every Confederate state (except Tennessee and Texas), the Proclamation went into immediate effect in Union-occupied areas and at least 20,000 slaves were freed at once on January 1, 1863.
Additionally, the Proclamation provided the legal framework for the emancipation of nearly all four million slaves as the Union armies advanced, and committed the Union to ending slavery, which was a controversial decision even in the North. Hearing of the Proclamation, more slaves quickly escaped to Union lines as the Army units moved South. As the Union armies advanced through the Confederacy, thousands of slaves were freed each day until nearly all (approximately 4 million, according to the 1860 census) were freed by July 1865.
While the Proclamation had freed most slaves as a war measure, it had not made slavery illegal. Of the states that were exempted from the Proclamation, Maryland, Missouri, Tennessee, and West Virginia prohibited slavery before the war ended. In 1863, President Lincoln proposed a moderate plan for the Reconstruction of the captured Confederate State of Louisiana. Only 10% of the state's electorate had to take the loyalty oath. The state was also required to abolish slavery in its new constitution. Identical Reconstruction plans would be adopted in Arkansas and Tennessee. By December 1864, the Lincoln plan abolishing slavery had been enacted in Louisiana. However, in Delaware and Kentucky, slavery continued to be legal until December 18, 1865, when the Thirteenth Amendment went into effect.
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