Lincoln had a plan to repatriate them all to Monrovia Liberia, but it was shot down by US Congress before he was assassinated.
Here’s some articles on it:
https://www.google.com/search?client=opera&q=Lincoln+plan+to+repatriate+slaves+to+monrovia&sourceid=opera&ie=UTF-8&oe=UTF-8
Yes. The idea is not new!