I'm curious- First Americans and Abortion?

I’m looking for some education- and I know all peoples have a variety of beliefs, but what can sone tell tell me about First American tribal culture surrounding abortion?

Would Tribal Lands be exempt from state laws on abortion?

I know some tribes have treaty rights, and are not subject to state laws. Would that hold equally true for abortion pills? Or for medical procedures? Could/would such clinics be supported within tribal communities? Or is that a subject that would create more friction?