New Jersey Governor Chris Christie greets supporters after announcing his bid for the US presidency at Livingston High School in Livingston, New Jersey June 30, 2015. Christie launched his White House campaign at his high school alma mater, becoming the 14th Republican to officially jump into a crowded GOP field more than 17 months before the 2016 presidential election. PHOTO/ KENA BETANCUR        (Photo credit should read KENA BETANCUR/AFP/Getty Images)