More from Jimmy Akin on "proportionate reasons".
The key to that scenario is having a Supreme Court willing to overturn Roe (et al.) and that will not happen until presidents appoint the number of justices sufficient to provide 5 votes to overturn. Barring the extremely unforeseen, that will not happen as long as a pro-abort president is in office. Thus each time a pro-abort president is in office, it effective extends the abortion holocaust by delaying the overturning of Roe.