Why is it ok for Democrats to campaign in black churches, or churches in general, but not ok for Republicans? why are churches supporting conservative positions on marriage or abortion, or other issues, threatened that they could lose tax exempt status?
Why is secular 501c3 talk radio (NPR and Pacifica) permitted to engage unchallenged in endorsing candidates, parties, and legislation?
Political speech IS limited for 501c3 charities. It is the exchanged for a tax free status.
But opposing the policy of abortion does not compromise that status and cross overy into overt advocacy for/against a specific candidate, party, or piece of legislation.