Making murder illegal does not stop murder. Making it legal would increase it and effective sanction it for the culture.
Here's what happened since abortion became legal.
Some sources say there were 1-2 million abortions in the 20s.
When Trump said he hated abortion I think he understood it would never be stopped with a law. Culture changed - and part of the change was the willingness to legalize abortion.
Do you honestly think there is any chance to change the culture back to the point it would request abortion be made illegal? I don’t. Sad, but I don’t.