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 accept the Proclamation and 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, as well as in Arkansas and Tennessee. However, in Delaware and Kentucky, slavery continued to be legal until December 18, 1865, when the Thirteenth Amendment went into effect.