Breadcrumb Home Covington predicts political impact of NATO summit Thursday, May 24, 2012 CBS News.com http://www.bloomberg.com/news/2012-05-22/obama-leaves-nato-with-message-on-wind… University of Iowa political scientist Cary Covington said the outcomes of the G-8 and NATO summits will probably have a “negligible impact” on the 2012 U.S. election.