Clearly, you are not a liberal. You think too narrowly.
I suspect it would be like the 55 MPG Speed Limit and 21 year old Drinking Age....tied to federal funding. States that ban abortions would get cut off from federal Medicaid funding and states that allow abortions would receive federal Medicaid funding.
Bingo.
Unless we abolish Medicare/Medicaid, they will eventually force abortions, gender mutilation, and firearms confiscation on us (I am looking at you McConnell and Cornyn).
We are one conservative Supreme Justice retirement, voluntary or otherwise, from losing everything, and it seems to all hinge on what happens in GA this election.