Federal prosecutors are investigating the role of Thomas Barrack, a top campaign fundraiser and close friend of President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE, and his connections to the foreign lobby, the New York Times reported Sunday.

Barrack has been investigated for potentially violating the law requiring people who try to influence American policy or opinion at the direction of foreign governments or entities to disclose their activities to the Justice Department, people familiar with the case told the Times.

He was reportedly interviewed last month by prosecutors in the public integrity unit of the United States attorney’s office in Brooklyn.

ADVERTISEMENT

Barrack’s spokesman, Owen Blicksilver, told the Times that Barrack's lawyer contacted the prosecutors’ office again and “confirmed they have no further questions for Mr. Barrack.”

Barrack has not been accused of wrongdoing, according to the Times.

Among the interactions reportedly investigated include Barrack coordinating the language in a draft of a speech on energy given by Trump with contacts including Rashid al-Malik, an Emirati businessman who is close to the rulers of the United Arab Emirates.

Barrack's aides told the Times that he acted as an independent intermediary between Persian Gulf leaders and the Trump campaign and administration, never on behalf of any foreign official or entity.

Questions about Barrack complying with the Foreign Agents Registration Act (FARA) arose during former special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE's investigation into Russian interference in the 2016 election before being referred to the United States attorney’s office in Brooklyn.

Three former Trump campaign aides charged by Mueller acknowledged violating FARA in their guilty pleas: Paul Manafort Paul John ManafortOur Constitution is under attack by Attorney General William Barr Bannon trial date set in alleged border wall scam Conspicuous by their absence from the Republican Convention MORE, Rick Gates Rick GatesFive takeaways on Bannon's indictment Senate intel leaders said Trump associates may have presented misleading testimony during Russia probe: report Top Mueller prosecutor: 'We could have done more' in Russia investigation MORE and Michael Flynn.