Sen. Lindsey Graham Lindsey Olin GrahamSenate GOP aims to confirm Trump court pick by Oct. 29: report The Hill's Campaign Report: GOP set to ask SCOTUS to limit mail-in voting Senate GOP sees early Supreme Court vote as political booster shot MORE (R-S.C.) on Sunday slammed the Justice Department's application for a secret surveillance warrant on a former Trump campaign adviser, saying that it was based on a "bunch of garbage."

Asked on CBS's "Face the Nation" whether a Foreign Intelligence Surveillance Act (FISA) warrant obtained on Carter Page, a former foreign policy adviser on President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE's campaign, was justified, Graham insisted that it was not and that the opposition research dossier that helped lay the foundation for the warrant application was bunk.

"If the dossier is the reason you issued the warrant, it was a bunch of garbage," Graham said. "The dossier has proven to be a bunch of garbage."

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He also said that the warrant application, which was released by the Justice Department on Saturday, served as proof that "the whole FISA warrant process needs to be looked at."

Documents released by the Justice Department on Saturday detail the case made by FBI officials to obtain the clandestine surveillance warrant on Page. Among the evidence presented was a controversial dossier compiled in 2016 by former British intelligence agent Christopher Steele.

That dossier alleges ties between the Trump campaign and Russia. But the information has not been verified and has been dismissed by Republicans and Trump as false.

In applying for the surveillance warrant on Page, the Justice Department also failed to disclose to the court that the research had been paid for, in part, by Hillary Clinton Hillary Diane Rodham ClintonDemocratic groups using Bloomberg money to launch M in Spanish language ads in Florida The Hill's Campaign Report: Presidential polls tighten weeks out from Election Day More than 50 Latino faith leaders endorse Biden MORE's campaign.

The use of the dossier in the warrant application has fueled criticism from Republicans that senior Justice Department officials acted inappropriately in obtaining the order.

Some Republicans, however, defended the FBI's actions after the warrant documents were released. 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.) said on CNN's "State of the Union" on Sunday that the bureau did not do anything wrong in obtaining the warrant.

“I don’t believe that them looking into Carter Page means they were spying on the campaign. I also don’t believe it proves anything about collusion,” Rubio said. “He was a guy that was on their screen even before the campaign.”