not clear that those laws would fail.
first, states absolutely will pass (MO and ID already have drafted them) laws that criminalize women and/or people who aid them who go out of state for abortions. will those be challenged? yes, how will the court rule? really who knows?
at least in the short term, they will terrorize people with the threat of jail
“There’s no clear precedent saying that states can’t try to regulate out-of-state conduct if it has some effect in-state or if it [involves] one of their citizens,” said David Cohen, a professor of law at Drexel University’s Kline School of Law and co-author of a forthcoming paper in the Columbia Law Review on impending interstate conflicts in abortion law. “What these laws are doing is saying, ‘We have a different understanding of how America works, and that understanding is that if you live in this state, we control you everywhere you are.’”
https://www.politico.com/news/2022/03/19/travel-abortion-law-missouri-00018539