The Democratic-controlled Maine Legislature gave final approval Friday to a bill that would protect health care workers who provide abortion and gender-affirming care from legal action brought in other states.

If signed by Democratic Gov. Janet Mills, Maine would join more than a dozen states that shield medical providers and others from out-of-state investigations regarding abortions. Republicans were firmly against the bill to shield against out-of-state lawsuits.

The Maine Senate voted 21-13 on Friday, a day after a 76-67 vote in the House.

The votes came after attorneys general in 16 states, including Tennessee, threatened legal action if Maine proceeded with a shield law preventing out-of-state repercussions for those who provide abortions and what they called “gender transition surgeries for children.”

Maine Attorney General Aaron Frey called those accusations “meritless” and said shield laws were necessary due to other states’ efforts “to punish beyond their borders lawful behavior that occurs in Maine and other states.”