The motivation of Constitutionalists is states rights (and the Constitution). Granted, there is overlap between the two groups, since states rights is just how the pro-life goal is properly and constitutionally achieved within the construct of our Republic.
There are three positions one can reasonably take on abortion:
1) Abortion is a right. (Except that it constitutionally problematic...always has been. Even supporters of RvW realize that.)
2) Abortion is not a right, so states "rights" control. (That was the decision today, and the constitutionally correct one. BTW, "States Rights" is an awful term, although everyone uses it. It is really the powers that are not assigned to the Federal government by the Constitution which therefore remain with the States where they stood before the enactment of the Constitution. But, everyone says "States Rights," so what are ya gonna do?)
3) Life is a right, and states and federal government must try to protect that right. (I think this is much more of a reasonable position than option 1 above, but I'm not sure that will win the day either. As we've seen in Uvalde, our law enforcement really does not have an obligation to defend people's lives.)
I think for 1 or 3, you really need an Article V Amendment. 2 is the default position under our Constitution. People should try reading the Constitution.
I say all that as a Constitutionalist. Obviously as a person who thinks we should not target innocent people for killing, I also believe we should do whatever we can to stop abortion. Happily for you, and happily for me, my Church asks me to go about this in legal and peaceful ways.
Note that no organization has shown more respect for authority than pro-lifers. Think about it: They think a holocaust is occurring, and yet 99.99% of them are 100% peaceful. That is really amazing. There are only isolated instances of violence, even though violence in defense of others is generally accepted to be justifiable.
We are about to find out if people who support abortion rights are as peaceful as pro-lifers. This may indeed be just the beginning.