President TrumpDonald John Trump2020 Democrats spar over socialism ahead of first debate Senate passes .5 billion border bill, setting up fight with House 'Teflon Don' avoids the scorn of the 'family values' GOP — again MORE's son, Donald Trump Jr.Donald (Don) John TrumpDemocrats seek to ban federal spending at Trump businesses Republicans, Trump Jr. signal support for embattled West Virginia governor The Hill's Morning Report — US strikes approved against Iran pulled back MORE, claimed Monday that former President Obama and former President George W. Bush "couldn't have done" what his father has done for "the American people."

"My father won. He was able to speak to the American people," Trump Jr. said during an interview on Fox News's "Tucker Carlson Tonight," referring to the 2016 election.

"He’s been able to move the needle for them in a way that Barack ObamaBarack Hussein Obama'Teflon Don' avoids the scorn of the 'family values' GOP — again Biden has a lot at stake in first debate Biden to debate for first time as front-runner MORE couldn't come close to doing," he continued. "But by the way, it’s not just a partisan issue. Bush couldn’t have done it either."

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Trump Jr.'s interview on "Tucker Carlson Tonight" came one day after Attorney General William Barr said in a letter to Congress that special counsel Robert MuellerRobert (Bob) Swan MuellerTop Republican considered Mueller subpoena to box in Democrats Kamala Harris says her Justice Dept would have 'no choice' but to prosecute Trump for obstruction Dem committees win new powers to investigate Trump MORE did not find evidence that the Trump campaign colluded with Russia in the 2016 election.

The revelation followed Mueller, who was investigating Russian interference in the election, submitting his final report to Barr.

During the interview Monday, Trump Jr. added that his father has "done incredible things" and said he could do more now that he's not in the "bubble" of the Mueller probe.

"Think of what he could do without that noise," he said.

-Updated 9:28 p.m.