Last October (and years before that, too), on "Pulpit Freedom Sunday," more than 1,500 pastors endorsed a candidate for President during church in complete violation of the law. They did it openly and proudly, people documented them doing it, the material was sent to the I.R.S. ... and nothing happened.
MORE: http://www.patheos.com/blogs/friendlyatheist/2013/05/16/the-other-irs-scandal/
See also...
The Partisan Preacher's Complaint: Franklin Graham Has No Grounds To Whine About IRS
https://www.au.org/blogs/wall-of-separation/the-partisan-preacher-s-complaint-franklin-graham-has-no-grounds-to-whine