Trump says would take foreign info on 2020 presidential opponent

President Donald Trump said Wednesday that he would be willing to accept information from a foreign country on his opponent in the 2020 election race, after years of denying Moscow helped him win office.

Trump team contacts with Russians during the 2016 presidential race led to special counsel Robert Mueller's probe into possible collusion and obstruction of justice, as well as several similar and ongoing efforts in Congress.

The Russia issue has consumed the Trump presidency for the past two years, and his new remarks suggested he still sees nothing wrong with a US political candidate accepting help from a foreign power.

"I think you might want to listen... there's nothing wrong with listening," Trump said when asked by ABC News what he would do if a country such as Russia or China offered him such information.

He denied the suggestion that that would amount to foreign meddling in a US election.

"It's not an interference, they have information -- I think I'd take it," Trump said.

"If I thought there was something wrong, I'd go maybe to the FBI -- if I thought there was something wrong," Trump said.

Mueller's report on his investigation stated that while there was insufficient evidence to charge Trump with criminal conspiracy, he was happy enough to benefit from Russian dirty tricks.

Democratic presidential frontrunner Joe Biden said that Trump was "welcoming" foreign interference in US voting.

"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," Biden said on Twitter.

Another Democratic presidential hopeful, Elizabeth Warren, seized on Trump's comments to repeat her strident calls for him to be impeached.

"The #MuellerReport made it clear: A foreign government attacked our 2016 elections to support Trump, Trump welcomed that help, and Trump obstructed the investigation," Warren tweeted.

"Now, he said he'd do it all over again. It's time to impeach Donald Trump."