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 former national security adviser H.R. McMaster said Wednesday that some of the presidents' advisers are "a danger to the Constitution.”

Politico reported that McMaster accused some of his former White House colleagues of attempting to influence Trump to advance their own agenda.

The outlet reported that McMaster, a retired Army lieutenant general, sought to portray himself as part of a group that provided Trump with unbiased policy advice during an event hosted by the Foundation for Defense of Democracies.

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“The second group of people, and I think this is true in any administration," he said, are those “who are not there to give the president options — they’re there to try to manipulate the situation based on their own agenda, not the president’s agenda.”

McMaster declined to name those to whom he was referring.

He added that a third group of advisers to Trump “cast themselves in the role of saving the country, even the world, from the president.” “I think those latter two categories of people are actually a danger to the Constitution of the United States,” McMaster said.

McMaster exited the White House in April 2018 after serving for a little more than a year in the role John Bolton John BoltonMaximum pressure is keeping US troops in Iraq and Syria Woodward book trails Bolton, Mary Trump in first-week sales Ex-NSC official alleges 'unprecedented' intervention by White House aides in Bolton book review MORE now occupies. McMaster did not mention Bolton in his remarks.

The retired three-star Army lieutenant general appeared to exit Trump's administration on good terms, though Trump had reportedly voiced displeasure with McMaster’s lengthy foreign policy briefings. Politico noted that McMaster's comments Wednesday marked a rare public disclosure of his struggles working in the Trump administration.

McMaster took over the position as top national security adviser to Trump after his predecessor, Michael Flynn, was fired for lying to Vice President Pence and other senior officials about his conversations with Russia's ambassador to the U.S.