Senate Minority Leader Mitch McConnell of Ky. walks onto the stage holding a rifle before speaking at the Conservative Political Action Committee annual conference at National Harbor, Md., Thursday, March 6, 2014.

Susan Walsh / AP

Senate Minority Leader Mitch McConnell of Ky. walks onto the stage holding a rifle before speaking at the Conservative Political Action Committee annual conference at National Harbor, Md., Thursday, March 6, 2014.