The core assertion of the Pro-Life movement is that children in their mothers’ wombs are real human beings whose lives should be protected. The Catechism states the following:
“The inalienable right to life of every innocent human individual is a constitutive element of a civil society and its legislation. [It] must be recognized and respected by civil society and the political authority” - CCC 2273
Therefore, it is mandatory for Catholics to demand the total abolition of abortion. Whether it happens all at once or gradually, it must be our goal.
The Welfare-State Alternative:
Unfortunately, many people feel a tension between various political commitments and want to find a way out of this duty. The most common tactic is to claim the economic policies of Pro-Choice politicians will “reduce the need for abortion”. And thus the Pro-Choice politician is the more practical option for a true Pro-Life voter.
Now, whether or not a robust welfare state is a good policy choice is besides the point. Catholics can disagree on that in good conscience. But there are huge problems – (both practical and philosophical) - with using the goal of a social welfare state to dismiss the need for legally protecting the unborn.