Congressman Trey Gowdy (R-S.C.) gave an update on the investigation into former National Security Adviser Gen. Michael Flynn, on "The First 100 Days."

Gowdy, a former prosecutor, said Flynn was under investigation for possibly breaking the law and failing to disclose lobbying work for foreign organizations. 

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He said his committee is getting some assistance from the Trump administration, but will need them to provide more documents on Flynn to be of maximum help.

Gowdy and Ranking Member Elijah Cummings (D-Md.) have reportedly spoken to former CIA Director John Brennan and former Acting Attorney General Sally Yates about Flynn.

"At some point, the American people will learn everything we've learned," he said.

Martha MacCallum asked if the Senate probe-- led by Sens. Richard Burr (R-N.C.) and Mark Warner (D-Va.)-- is being "slow-walked."

"I don't judge the efficacy of an investigation based on length-of-time," Gowdy responded.

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