MSNBC host Nicolle Wallace hit Donald Trump Jr. Don John Trump'Tiger King' star Joe Exotic requests pardon from Trump: 'Be my hero please' Zaid Jilani discusses Trump's move to cancel racial sensitivity training at federal agencies Trump International Hotel in Vancouver closes permanently MORE on Monday over his testimony on a Trump Tower meeting with a Russian lawyer, calling the president's son's comments "lies, lies, lies."

Wallace during a segment on "Deadline White House" read aloud Trump Jr.'s testimony to the Senate Judiciary Committee last September, when he discussed his meeting with Russian lawyer Natalia Veselnitskaya and top campaign aides at Trump Tower in 2016. The Kremlin-linked lawyer had offered dirt on President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE's Democratic opponent, former Secretary of State Hillary Clinton Hillary Diane Rodham ClintonDemocratic groups using Bloomberg money to launch M in Spanish language ads in Florida The Hill's Campaign Report: Presidential polls tighten weeks out from Election Day More than 50 Latino faith leaders endorse Biden MORE.

Wallace read the part of Trump Jr.'s testimony in which he said he did not know whether President Trump was involved in crafting his initial statement on the meeting. In that same testimony, Trump Jr. said his father may have "commented through [former White House communications director] Hope Hicks Hope Charlotte HicksSenate intel leaders said Trump associates may have presented misleading testimony during Russia probe: report Cuomo turned down Trump invitation to participate in April press briefing: report Trump shakes up White House communications team MORE."

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"Lies, lies, lies," Wallace said as she ripped up the paper in her hand.

Wallace's segment on Trump Jr.'s testimony came after a bombshell report by The New York Times that Trump's lawyers revealed in a letter to special counsel Robert Mueller that the president had dictated Trump Jr.'s statement on the Trump Tower meeting.

The report contradicted Trump Jr.'s testimony and the statements of Trump's lawyer, Jay Sekulow, who previously denied the president had any involvement crafting Trump Jr.'s response to reports about the meeting.

The meeting, and the potential coordinated cover-up, has been a focus in Mueller's investigation of Russia's efforts to influence the 2016 presidential race. The changing narrative surrounding the Trump Tower events is likely to raise new legal questions, despite the president's lawyer's assertions that he did not and cannot obstruct justice.

Wallace, a former communications director to President George W. Bush, has repeatedly criticized Trump and his administration this year. In late May, she stopped reading Trump's tweets attacking the FBI on air, calling them "boldface lies."