Apparently, you aren't aware of the fact that Lincoln's idea was to send the ex-slaves back to Africa. That would have solved the race problem in America, all right. US Blacks would have had the pleasure of being in their African homelands all these years.
Sponsor or promote would be a more appropriate verb here than send.
The return was never planned as anything other than voluntary. The logistics, not to mention the lack of interest among black Americans, doomed the plan from the beginning.
The back to Africa movement had gone by the wayside by the time Lincoln rose to prominence. He at one time favored a more practical approach like sending them somewhere in Latin America.