Story highlights Jeb Bush compared rival Donald Trump to liberal filmmaker Michael Moore on CBS.

Ted Cruz and Lindsey Graham also compared the business mogul to the filmmaker.

(CNN) Jeb Bush was the latest Republican presidential candidate to compare rival Donald Trump to liberal filmmaker Michael Moore on "CBS This Morning" on Tuesday, in response to Trump's criticism of George W. Bush's handling of the Iraq War.

"I don't get it," Bush said. "He's basically bearing the words of Michael Moore in a Republican Primary."

Bush is not the only politician to compare the business mogul to the left-leaning filmmaker. During an interview with ABC's Good Morning America on Monday, Bush ally and South Carolina Sen. Lindsey Graham called Trump, "The Michael Moore of the Republican Party."

Republican candidate and Texas Sen. Ted Cruz also compared the two during a stop in South Carolina Monday.

"When Trump sided with MoveOn.org and Michael Moore and the fever swamp left-wing, that demonstrated where he was coming from," Cruz said.

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