Rep. Trey Gowdy Harold (Trey) Watson GowdySunday shows preview: Election integrity dominates as Nov. 3 nears Tim Scott invokes Breonna Taylor, George Floyd in Trump convention speech Sunday shows preview: Republicans gear up for national convention, USPS debate continues in Washington MORE (R-S.C.) said in a new interview that the surveillance warrants for a former aide to President Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE’s campaign would not have been obtained without the controversial dossier compiled by former British spy Christopher Steele.

In an interview with CBS’s “Face the Nation,” the House Oversight and Government Reform Committee chairman said that while the dossier was not the only information the Foreign Intelligence Surveillance Act (FISA) court used to obtain the warrant, it would not have been acquired without the dossier.

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"Would it have been authorized were it not for that dossier?” Host Margaret Brennan asked Gowdy

“No. It would not have been,” Gowdy, a former prosecutor, replied.

Gowdy’s interview comes after the release of a controversial GOP memo that accuses the Justice Department of abusing its surveillance powers.

“It was not the exclusive information relied upon by the FISA court,” Gowdy said in the CBS interview, referring to the dossier.

The memo also said that former Trump campaign adviser George PapadopoulosGeorge Demetrios PapadopoulosTale of two FBI cases: Clinton got warned, Trump got investigated Trump says he would consider pardons for those implicated in Mueller investigation New FBI document confirms the Trump campaign was investigated without justification MORE sparked the initial counterintelligence probe, but added that the dossier was “essential” to obtaining the FISA warrant on former Trump campaign aide Carter Page.