Mann asked CEI and "National Review" to remove the allegations and apologize, or he would take action. The CEI published further insults, and "National Review" editor Rich Lowry responded in an article headed "Get Lost" with a declaration that, should Mann sue, the discovery process would be used to reveal and publish Mann's emails. Mann's lawyer filed the defamation lawsuit with the DC Superior Court in October 2012. Defendants were the National Review, the Competitive Enterprise Institute, Mark Steyn and Rand Simberg.