New Jersey Gov. Chris Christie delivers an address at the GOP's Statesmen's Dinner on Friday, May 30, 2014, in Nashville, Tenn. Christie told Tennessee Republicans on Friday that political discord at home has made the United States vulnerable abroad. (AP Photo/Terry Wyatt)
New Jersey Gov. Chris Christie, left, and Tenn. Gov. Bill Haslam, right, talk with people at a restaurant Friday, May 30, 2014, in Nashville, Tenn. (AP Photo/Terry Wyatt)
Tenn. Gov. Bill Haslam, left, and New Jersey Gov. Chris Christie, , right, talk with reporters at a restaurant Friday, May 30, 2014, in Nashville, Tenn. Christie made a campaign appearance for Sen. Lamar Alexander. (AP Photo/Terry Wyatt)
New Jersey Gov. Chris Christie talks with people at a restaurant Friday, May 30, 2014, in Nashville, Tenn. Christie made a campaign appearance for Sen. Lamar Alexander. (AP Photo/Terry Wyatt)