Eugene Volokh challenges a common criticism:
[If] you oppose all tax exemptions for nonprofits (and for contributions to nonprofits), or for all nonprofits that specialize in speaking — such as advocacy groups, schools, universities, public radio stations, and churches — then churches would naturally be included in your opposition. But so long as charitable nonprofits, under a very generous standard of what constitutes a suitable charitable purpose, are tax-exempt, the same would cover churches.