Re: Charleston Under Arms..
There was certainly no clamoring for blacks but the southern portions of Indiana, Illinois and Ohio was settled by white southerners. They remained rural, southern and localism in their orientation and hostile toward "Yankees" of New England heritage who had settled the northern portions of these states made accessible by the Erie Canal. It was said about the time of the war that Cincinnati was more Cnfederate in it's leaning than Knoxville. As for over all immigration from other countries, I believe 7 of 8 were in the North before the outbreak of war.