Just how powerful is Rick Warren? Ask the IRS. When they tried to collect back taxes from the pastor, Warren used his mega-clout to campaign against them–and won. With the help of Congress, that is, which stepped in to preempt a court ruling on the Cold War law Warren appears to have twisted to his advantage. Jon Weiner reports. This small piece is in many ways the most revealing article we’ve read on Warren — and church and state — in awhile. That it’s published in the left-liberal Nation shouldn’t dissuade more conservative readers from considering the facts.