The Clinton Foundation should be indicted as a racketeering enterprise, former New York City Mayor Rudy Giuliani, a supporter of Republican presidential nominee Donald TrumpDonald John TrumpTrump nominates Jeffrey Rosen to replace Rosenstein at DOJ McCabe says ‘it’s possible’ Trump is a Russian asset McCabe: Trump ‘undermining the role of law enforcement’ MORE, said Sunday. 

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"She did favors for those very people who gave money to the Clinton Foundation," Giuliani said on "Fox News Sunday." 

When host Shannon Bream pushed back, saying those involved with the foundation have claimed they haven't been under investigation, Giuliani said, "That's the biggest bunch of garbage I've ever heard.

"They are under, I believe, investigation, and if they're not, the Justice Department should be ashamed of themselves." 

The Clinton Foundation's fundraising from corporate and foreign donors has been a target of Republicans, who allege that those supporters had undue influence over the Clintons' work in government.

"She is the consummate corrupt Washington insider," Giuliani said of Democratic presidential nominee Hillary ClintonHillary Diane Rodham ClintonSanders campaign reports raising M in less than a day The Memo: Bernie Sanders’s WH launch sharpens ‘socialist’ question Roger Stone invokes gag order in new fundraiser MORE.

Former President Bill ClintonWilliam (Bill) Jefferson ClintonTrump says he never told McCabe his wife was 'a loser' Harris off to best start among Dems in race, say strategists, donors For 2020, Democrats are lookin’ for somebody to love MORE said this week that if his wife is elected, the foundation will no longer take foreign or corporate money.