I am guessing that many churches who lose their non-profit status because they break federal law will no longer be in business once they pay taxes and people can't write off donations any longer.

I am also guessing once sanctuary city's start getting taken down, churches will get swept up in the same federal net (again.) Has happened before. So those churches also may not survive. Churches are aware of this, I  have read several articles where the churches themselves say they may well be charged with these federal crimes. 

So nah, not worried about their influence when they are no longer in existence.