I would roll back all tax breaks for religious institutions. If you give to a church or mosque then its your dime. It just seems to me that we are indirectly supporting religion through tax breaks. We'll find out how mighty the church is after you hit them in the pocketbook.
I would also make all churches give up 1 years worth of income and put that on one specific area of medicine that needs it the most (MS, Cancer, Muscular Dystophy…..etc.). Find the cure and be done with it.