Which CANNOT be done without a pro-life president.
Two: Work on changing hearts and minds. People are not going to rally to your side through being insulted and reviled. The reason abortion has not been changed even a little bit by electoral activism is that the people who keep Members of Congress in office don't want it banned, and they are convinced (rightly) that if they put you in power, that's what you will do.
Congress has NOTHING to do with it, the president appoints Supreme Court justices and at this point they will be the ones to uphold any pro-life legislation which almost certainly would originate in a state legislature.
I think there is more too it than that. Regretably, Ronald Reagan, who we all love and adore, had 3 picks for the supreme court. 2 of the 3 were duds. Only Scalia is in favor of dumping R vs W. Kennedy has maintained restrictions but wont overturn R vs W. O'connor was a total dud.
GHWB, gave us Souter! A Lib-Pig and Thomas, so he was 50-50.
So there is no certainty that a pro life President will give us the Supreme Court we need.
If R vs W is overturned, it goes to the States. So, there are maybe 5 states that will outlaw it.
Abortion will continue in the millions for as far as the eye can see.
If (unborn)life is everything, as this thread is premising, then it will not be ended by voting pro-life. (I am pro-life and have always voted pro-life).
The holocaust will continue.