President TrumpDonald John TrumpRussia's election interference is a problem for the GOP Pence to pitch trade deal during trip to Michigan: report Iran oil minister: US made 'bad mistake' in ending sanctions waivers MORE's son, Donald Trump Jr.Donald (Don) John TrumpTrump Jr. slams 2020 Dems as 'more concerned' about rights of murderers than legal gun owners It is wrong to say 'no collusion' Nadler: I don't understand why Mueller didn't charge Donald Trump Jr., others in Trump Tower meeting 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 ObamaTrump's regulatory rollback boosts odds of a financial crisis Five town hall takeaways: Warren shines, Sanders gives ammo to critics Ex-Obama CIA official makes 'Game of Thrones' cameo 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 MuellerSasse: US should applaud choice of Mueller to lead Russia probe 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.