Fellow Republican 2016 U.S. presidential candidates Dr. Ben Carson (L), Wisconsin Governor Scott Walker (2nd L) and former Florida Governor Jeb Bush (R) laugh as fellow candidate and businessman Donald Trump (2nd R) reacts near the end of the debate after realizing that a slew of criticisms spoken by fellow candidate and former Arkansas Governor Mike Huckabee (not pictured) were not aimed at him but at Democratic presidential candidate Hillary Clinton, at the first official Republican presidential candidates debate of the 2016 U.S. presidential campaign in Cleveland, Ohio, August 6, 2015. REUTERS/Brian Snyder