Democratic presidential nominee Hillary Clinton Hillary Diane Rodham ClintonJoe Biden looks to expand election battleground into Trump country Biden leads Trump by 12 points among Catholic voters: poll The Hill's Campaign Report: Biden goes on offense MORE's expectation that debate moderators fact-check her opponent shows she is weak and scared of Donald Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE, Newt Gingrich said Sunday.

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Gingrich, a Trump adviser and former Speaker of the House, said it's Clinton's job to fact-check Trump — not the media's.

"How weak is Clinton that her campaign wants moderators to fact check Trump? Isn't that her job? Are they that afraid of Trump?" Gingrich tweeted Sunday.

How weak is Clinton that her campaign wants moderators to fact check Trump?isn't that her job?are they that afraid of Trump. — Newt Gingrich (@newtgingrich) September 25, 2016

The Clinton campaign has said it expects moderators to fact-check Trump, the Republican presidential nominee, during Monday's first debate.

"She thinks moderators should play a role in making sure that the audience knows the truth," Clinton spokesperson Jennifer Palmieri said last week.

“My biggest concern is not a view of any moderator, but just that people [adjust] their questions … to suit the candidate in front of them,” Palmieri said.