Short memory. They tried to repeal it but the Democrats and McCain stopped it. Republicans voted down Commie Care because it's unconstitutional, not because it was DumBama's. But even if it was because of DumBama, so what? That's quite normal for the opposing party to be against the majority on just about anything.
McCain didn't stop the repeal by himself.
They didn't repeal it because they know that they will yank coverage from millions of people, a lot of whom live in Red States. You know, the kind of inbred racist fuck who doesn't know that ObamaCare and the ACA are the same thing.