Emancipation Proclamation also provides for black military enlistment, and a significant percentage of black Union troops eventually come from the lower Mississippi valley. Proclamation also raises issue of how emancipation will factor into restoring rebellious states, and debate begins in Congress and northern society over securing free-state restoration. Unionist movements in Louisiana and Tennessee begin to divide into “free-state” and “conservative” factions. Free-state Unionists are committed to restoring rebellious states without slavery, though opposing black political and legal equality. Conservative Unionists develop argument for restoring states to the Union while maintaining slavery. Republicans formulate Reconstruction policy around the Constitution’s “republican form of government” in requiring the rebellious states to abolish slavery.