"Straw Man"...here is another Catholic theologian's writing on this very topic (see link)...and an excerpt from it...
------------------------
"It is commonly assumed that so called “pro-life” Catholics, by virtue of our acceptance of the church’s teaching on abortion, are morally obligated to vote for political candidates who support the appointment of Supreme Court judges intent on reversing Roe v. Wade. The pursuit of the reversal of Roe v. Wade is, in my view, a legitimate and defensible strategy for implementing Catholic teaching. Although I claim no special expertise in constitutional law, I believe a good argument can be made that Roe v. Wade is based on flawed constitutional interpretation. However, we cannot forget that a reversal of Roe v. Wade would have as its only direct effect a return of the issue to state legislatures. It is far from clear that even the majority of the fifty state legislatures would vote to criminalize abortions. And this is to say nothing of the practical problems associated with legal enforcement of anti-abortion laws or the fact that illegal and unsafe abortions would almost certainly continue.
My larger point is that, as a matter of binding moral principle, what Catholic teaching demands of a conscientious Catholic is a commitment to oppose abortion, not just privately, when faced with such a decision in the life of one’s family, but publicly as well. But, might a conscientious Catholic, precisely because of their convictions regarding the evil of abortion, pursue alternate strategies that in their judgment might be more effective in reducing the number of abortions in our country thancriminalization?
To put the matter simply, could not a Catholic decide that it was more fruitful to change the culture rather than changing the law? I believe the answer is yes. Catholics can quite plausibly and defensibly act on church teaching by committing themselves to the cultivation of societal values that support not only the life and dignity of the unborn, but also the life and dignity of the already born, including the dignity of poor women who, having become pregnant, often find themselves in an impossible situation.
Many Catholics have made the reversal of Roe v. Wade bear the full weight of Catholic opposition to abortion. They have also made opposition to Roe v. Wade a veritable litmus test for Catholic orthodoxy. This approach, however well meaning, has undermined the exercise of prudence by suggesting that regarding certain issues, prudence’s concern for attending to the particulars of practical circumstance were unnecessary."
----------------------
Hopefully, this paper gives you a better understanding of how faithful Catholics may differ in the 'means' toward reducing abortions...certainly my view.
Link: https://richardgaillardetz.files.wordpress.com/2014/04/prudential_judgment_and_catholic_teaching.pdf