President Donald Trump said Wednesday that if a foreign power offered dirt on his 2020 opponent, he'd be open to accepting it and that he'd have no obligation to call in the FBI.

"I think I'd want to hear it," Trump said in an interview with ABC News, adding, "There's nothing wrong with listening."

The role of Trump's eldest son, Donald Trump Jr., in organizing a 2016 meeting with a Russian lawyer offering negative information on Hillary Clinton was a focus of special counsel Robert Mueller's probe of Russian meddling in the last presidential campaign.

Mueller painstakingly documented Russian efforts to boost Trump's campaign and undermine that of his Democratic rival. But while Mueller's investigation didn't establish a criminal conspiracy between Russia and Trump's campaign, Trump repeatedly praised WikiLeaks in 2016 and celebrated information exposed by Russian hackers.

One of Trump's challengers, former Vice President Joe Biden, tweeted: "President Trump is once again welcoming foreign interference in our elections. This isn't about politics. It is a threat to our national security. An American President should not seek their aid and abet those who seek to undermine democracy."

Also the same day, former White House communications director Hope Hicks has agreed to a closed-door interview with the House Judiciary Committee, a breakthrough for Democrats who have been frustrated by President Donald Trump's broad stonewalling of investigations.

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