Homosexuals adopting children. Oh, already happend.
Reducing - or eliminating - age of consent restrictions for same-sex intercourse.
Let's see...
Perform an abortion if you want to get an MD degree. They've already tried this and failed to get it. Under ObamaCare, I expect it will come back and this time it will become law.
Homosexuality training films in middle school. I think they've tried that one too.