The abortion of an unborn child is the moral responsibility of the mother. No one else. Certainly not voters who vote for a candidate that, like Trump, has historically supported the abortion right and heralded the good work done by Planned Parenthood.
There's a vast difference between what's moral and what's legal. All manner of immoral behaviors are in fact legal. Abortion is no different. The abortion right merely makes abortion a lawful choice, a lawful exercise of one's personal liberty. I will not blame politicians - even a changeling like Trump - for acknowledging a woman's liberty. It's the mother that makes the choice to abort or not abort, so the blood is on her hands and no one else's. That's the nature of liberty, or should be - the shouldering of responsibility for one's actions.