A key Senate Republican is looking into whether Sen. Ted Cruz Rafael (Ted) Edward CruzCruz blocks amended resolution honoring Ginsburg over language about her dying wish Trump argues full Supreme Court needed to settle potential election disputes Press: Notorious RBG vs Notorious GOP MORE (R-Texas) discussed classified information during Tuesday night's Republican presidential debate.

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"I'm having my staff look at the transcripts of the debate right now," Sen. Richard Burr Richard Mauze BurrRep. Mark Walker says he's been contacted about Liberty University vacancy Overnight Defense: Trump rejects major cut to military health care | Senate report says Trump campaign's Russia contacts posed 'grave' threat Senate report describes closer ties between 2016 Trump campaign, Russia MORE (R-N.C.), the chairman of the Intelligence Committee, told reporters. "Any time you deal with numbers ... the question is, 'Is that classified or not?' Or is there an open source reference to it?"

Cruz raised eyebrows during an exchange with Sen. Marco Rubio Marco Antonio RubioOvernight Defense: Pentagon redirects pandemic funding to defense contractors | US planning for full Afghanistan withdrawal by May | Anti-Trump GOP group puts ads in military papers Democrats step up hardball tactics as Supreme Court fight heats up Press: Notorious RBG vs Notorious GOP MORE (R-Fla.) over the National Security Agency's surveillance program, when he said that the old program covered "20 or 30 percent of phone numbers" while the new program covers roughly 100 percent.

Becca Glover Watkins, Burr's communications director, suggested on social media that Cruz might have said something he shouldn't have, though she didn't specifically reference his comments.

Cruz shouldn't have said that. — Becca Glover Watkins (@beccaglover) December 16, 2015

Burr added on Wednesday that while he hadn't heard Cruz's comments, "the question had been raised, therefore I asked them to look at it."

He suggested that his staff would need to search through media reports to see if the numbers had been reported independently before.

The North Carolina senator didn't specify what — if any — consequences Cruz could face if his staff determines that the Texas Republican did discuss classified information.

"I would be a lot more worried if he was in fact a member of the committee, but to my understanding this subject matter was not one where any members outside of the committee had been briefed on it," he said.