Thomas C. Berg, Kimberlee Wood Colby, Carl H. Esbeck & Richard W. Garnett, Religious Freedom, Church–State Separation, and the Ministerial Exception, 106 Nw. U. L. Rev. Colloquy 175 (2011), http://www.law.northwestern.edu/lawreview/colloquy/2011/28/LRColl2011n28Garnett.pdf.