Special counsel Robert MuellerRobert (Bob) MuellerSenate Democrats urge Garland not to fight court order to release Trump obstruction memo Why a special counsel is guaranteed if Biden chooses Yates, Cuomo or Jones as AG Barr taps attorney investigating Russia probe origins as special counsel MORE is reportedly looking into an interaction between a Russian lawyer and Ivanka TrumpIvanka TrumpKushner launching investment firm in move away from politics: report Washington Post calls on Democrats to subpoena Kushner, Ivanka Trump, Meadows for testimony on Jan. 6 Jill Biden takes starring role at difficult Olympics MORE surrounding a controversial Trump Tower meeting during the campaign.

While the first daughter and now-White House adviser did not take part in the June 2016 meeting, she exchanged greetings with the Russian attorney and a lobbyist who attended the meeting as they stepped off an elevator, a person familiar with the exchange told the Los Angeles Times

Mueller's team is looking into any interactions the attorney, Natalia Veselnitskaya, and lobbyist, Rinat Akhmetshin, had with President TrumpDonald TrumpTrump PACs brought in over M for the first half of 2021 Chicago owes Trump M tax refund, state's attorney mounts legal challenge Biden hits resistance from unions on vaccine requirement MORE's family members and inner circle, the Times reported.

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The June 2016 meeting — when the president's eldest son, Donald Trump Jr.Don TrumpDonald Trump Jr. joins Cameo Book claims Trump family members were 'inappropriately' close with Secret Service agents Trump Jr. shares edited video showing father knocking Biden down with golf ball MORE, met with the attorney, who promised damaging information on Hillary ClintonHillary Diane Rodham ClintonClintons, Stacey Abrams meeting Texas Democrats Biden says Russia spreading misinformation ahead of 2022 elections Highest-ranking GOP assemblyman in WI against another audit of 2020 vote MORE — has become a flashpoint in the Russia probe.

Trump Jr., the president's son-in-law and senior adviser Jared KushnerJared Corey KushnerBlack community group loses bid to acquire downtown LA Mall despite highest offer Kushner launching investment firm in move away from politics: report Washington Post calls on Democrats to subpoena Kushner, Ivanka Trump, Meadows for testimony on Jan. 6 MORE and former Trump campaign chairman Paul ManafortPaul John ManafortLobbyist Tony Podesta returns to work for Huawei Former bank CEO convicted of bribery in scheme to land Trump admin job Trial begins for Chicago banker who exchanged loans with Manafort for Trump job MORE all attended the meeting with the Russian lawyer and lobbyist.

Trump Jr. has maintained that the meeting was primarily to discuss American adoptions of Russian children. 

In an excerpt from a new book detailing the early months of the Trump presidency, former White House chief strategist Stephen Bannon is quoted as saying that there was "zero" chance that President Trump did not know about the meeting.