This is a great opportunity for liberals to reach out to theologically conservative churches, and no such opportunity should be neglected. Not every Bible Christian is Jerry Falwell.
I’d suggest an appropriations rider telling the IRS to butt out except in cases where there’s systematic partisan activity. Let the Republicans vote against it if they dare.
Footnote Ampersand has some evidence suggesting political bias at the IRS: at least, evidence that pro-war and pro-Bush churches have gone much further than All Saints went without catching any IRS flak.