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 TrumpCDC updates website to remove dosage guidance on drug touted by Trump Trump says he'd like economy to reopen 'with a big bang' but acknowledges it may be limited Graham backs Trump, vows no money for WHO in next funding bill 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 ClintonTrump, Biden set for tight battle in Florida We need to be 'One America,' the polling says — and the politicians should listen Poll shows Biden with 6-point edge on Trump in Florida MORE.

Former President Bill ClintonWilliam (Bill) Jefferson ClintonHistory's lessons for Donald Trump Clintons send pizza to NY hospital staff treating coronavirus Budowsky: President Trump, meet with all former living presidents MORE said this week that if his wife is elected, the foundation will no longer take foreign or corporate money.