Can states limit abortion and gender-affirming treatments outside their borders?

https://www.npr.org/2022/03/15/ [login to see] /missouri-idaho-abortion-gender-affirming-treatments
Conservative lawmakers across the U.S. have unleashed a wave of state legislation attempting to restrict access to abortions and to gender-affirming medical care for transgender youth by allowing lawsuits to be filed against anyone who helps them.

But now there's a new twist in what appears to be a broader Republican strategy: Representatives in multiple states are pushing bills that would attempt to limit what residents can and can't do even beyond state lines.

Recently in Missouri, a state representative introduced a measure that would let people sue anyone they suspect of helping a resident get an abortion in another state.

More than 1,500 miles away, an Idaho bill seeking to ban gender-affirming care for youth would have made it a felony to help a child access care outside the state. While Idaho Senate leaders last week said they will not be taking up the bill — essentially killing it, for now — it was easily passed by the Republican-led Idaho House a day earlier.

Legal experts say these so-called bounty hunter bills are most certainly unconstitutional and have little chance of withstanding legal challenges.