GOP presidential contender Jeb Bush jabbed Democratic rival Hillary ClintonHillary Diane Rodham ClintonDemocrats bristle as Hicks appears for daylong Capitol Hill testimony Democrats bristle as Hicks appears for daylong Capitol Hill testimony Trump: 'So sad' Democrats are putting Hope Hicks 'through hell' MORE over the FBI investigation into her private email server during Thursday's GOP debate.

"Here’s the problem, if she gets elected, she's under investigation with the FBI," Bush said at the debate in North Charleston, S.C., hosted by Fox Business Network.

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"Her first 100 days ... she might be going between the courthouse and White House."

Bush said the scandal over Clinton's use of private email while secretary of State would make her a "national security disaster."