- Tag results for Michael Flynn
McMaster joined the administration in February last year, replacing Michael Flynn, who has since been indicted by Robert Mueller, who is investigating Russia's role in Trump's election.
Senators had questioned whether she knew about conversations between Russia's ambassador to Washington Sergey Kislyak and former national security advisor Michael Flynn in 2016.
Trump insisted he and his campaign had not colluded with Moscow in the election, and shifted blame on the Justice Department and rival Hillary Clinton.
In a series of tweets, Trump said that "nothing happened" to Hillary who lied many times to the FBI while General Flynn lied to the agency and his life is destroyed.
"I recognize that the actions I acknowledged in court today were wrong, and, through my faith in God, I am working to set things right," Flynn said in a statement.
The 57-year-old Flynn was one of the most prominent military veterans to endorse Trump's campaign.
Flynn has been charged with lying to investigators over his discussions with his Russian contacts regarding US sanctions being imposed on Moscow during Obama's government.
Flynn was forced to resign as national security adviser in February after White House officials concluded that he had misled them about the nature of his contacts.
Investigators are probing whether former White House national security advisor Michael Flynn discussed expelling a Turkish dissident back to his country in exchange for millions of dollars.
Michael Flynn, invoked his constitutional right against self-incrimination on Monday.
The Arizona Republican says, "We've seen this movie before."
Flynn resigned the day before the Feb. 14 meeting, after it was revealed he apparently had lied to his about the nature of his contacts with Russia's ambassador.
Flynn, a former Army lieutenant general and Defense Intelligence Agency chief, accepted cash for his work on behalf of foreign interests.
Flynn was interviewed by the FBI about his telephone conversations with Russia's ambassador to the U.S., a sign his ties to Russia had caught the attention of law enforcement officials.