For more than two years now, Donald Trump has promised the Religious Right that he would sign a repeal of the rule that forbids places of worship from endorsing political candidates if they want to keep their tax exempt status. If he were to rescind it, Christian churches would be one step closer to essentially becoming fundraising arms of the Republican Party. We have no idea how much dark money would start flowing to campaigns via churches when that day arrives.
Those efforts began right after Trump took office, when he signed an executive order claiming to repeal the rule… but it had no teeth. It was more of a performance than anything substantive.