Your examples are as much cultural as religious, at least in this era. "Under god" was added to the anthem in the 50s, and I doubt it'll last another decade.

Plural marriage isn't widely practiced or supported for pragmatic reasons.

Holidays are religious artifacts, yet not all of them, and there is no forced participation anymore. (Except in so far as government services are unavailable.)

Abortion rights have and are evolving. As the old, more religious folks die off it should swing the other way soon.