Trump Jr. says he’s not worried about going to jail due to Mueller probe
© Greg Nash

Donald Trump Jr.Donald (Don) John TrumpAnother New York condo votes to remove 'Trump' from name Trump's son attacks LGBT magazine op-ed that calls effort to decriminalize homosexuality 'racist' Gillibrand uses Trump Jr. tweet to fundraise MORE said he's not worried about potentially being incriminated in special counsel Robert MuellerRobert Swan MuellerSasse: US should applaud choice of Mueller to lead Russia probe MORE's investigation, but acknowledged the ongoing probe has been "very rough" for him personally.

“I’m not [worried] because I know what I did and I’m not worried about it,” Trump Jr. said in an interview with ABC News.

“That doesn’t mean they won’t try to do something,” he added.

The president's eldest son has been a key figure in Mueller's investigation into Russian interference in the 2016 election because of his role in a July 2016 meeting at Trump Tower.

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Trump Jr. agreed to meet with a Russian lawyer who had promised dirt on then-Democratic presidential candidate Hillary ClintonHillary Diane Rodham ClintonHillicon Valley: Trump pushes to speed up 5G rollout | Judge hits Roger Stone with full gag order | Google ends forced arbitration | Advertisers leave YouTube after report on pedophile ring 4 ways Hillary looms over the 2020 race Hillary Clinton met with Biden, Klobuchar to talk 2020: report MORE.

While Trump Jr. initially maintained the meeting was focused on Russian adoption policy and called it a "waste of time," President TrumpDonald John TrumpSchiff urges GOP colleagues to share private concerns about Trump publicly US-China trade talks draw criticism for lack of women in pictures Overnight Defense: Trump to leave 200 troops in Syria | Trump, Kim plan one-on-one meeting | Pentagon asks DHS to justify moving funds for border wall MORE confirmed the meeting was intended to gather information on Clinton last month as he sought to defend his son.

Both Trump and Trump Jr. have insisted the president was not aware of the meeting before it took place.

Trump Jr. told ABC that he believes there "will never be a conclusive end" to the Mueller investigation, which the president frequently labels a "witch hunt."

“It’s obviously been very rough,” Trump Jr. said of the investigation's toll on him personally.

“At the same time, I think I'm able to compartmentalize it,” he added. “And in the end I know what I've done, and I'm not worried about that at all, because you know, I’ve done nothing that anyone else wouldn't do in that position, in my opinion.” 

Four former Trump associates have been indicted or pleaded guilty as part of Mueller's investigation thus far. Former Trump campaign chairman Paul ManafortPaul John ManafortWhite House braces for Mueller report Hillicon Valley: Trump pushes to speed up 5G rollout | Judge hits Roger Stone with full gag order | Google ends forced arbitration | Advertisers leave YouTube after report on pedophile ring Manafort to be sentenced for bank, tax fraud in Virginia on March 8 MORE, who also attended the Trump Tower meeting, was convicted last month on charges of of bank fraud and tax fraud.