There are anti-euthanasia atheists (E.g. Kevin Yuell).

There are pro assisted suicide religions too.

Neither of those matter because they don’t hold massive, disproportional influence over a huge part of the US political establishment.

In general in the US only White Evangelical Protestants and Black Protestants have less than a majority who believe assisted suicide / euthanasia should be available for "great pain and no hope of improvement", and those two groups still have over 40% who believe it should be available.

And that's as of 2015, so the trend may be higher by now. https://www.pewresearch.org/short-reads/2015/10/05/californi...

My bad, it's Yuill.

There’s an interesting case right now in Vancouver against the largest hospital downtown which is affiliated with Catholics (I think, St Paul’s is the facility in any case).

Several in-patients that opted for medical assistance in dying were refused that treatment by administrators of the hospital on religious grounds, and their families are sueing based on the additional suffering inflicted by having to transfer to other facilities.

Catholic hospitals are a big problem in the US too.

If your job duties might go against your religious beliefs, you are responsible for finding other work. Not doing so should be grounds for termination.