The cause of the firing was an unspecified security issue, said a third White House official with knowledge of the situation.
If there was any issue with McEntee inside the White House, Trump's campaign hasn't acknowledged it.
President Donald Trump's longtime personal aide John McEntee was sacked and escorted from the White House on Monday, three sources with knowledge of the matter told CNN. The Washington Post first reported McEntee's firing, and CNN first reported the reason for his firing, citing a source familiar with his firing.
McEntee was one of few aides who did not have their access to the President limited when John Kelly became the chief of staff last fall.
The 27-year-old former University of CT quarterback is more widely known for a viral YouTube trick throw video than his work with Trump. "He made sure Mr. Trump had markers to sign autographs, delivered messages to him in the White House residence and, over the weekend, ensured that the clocks in the White House residence were adjusted for daylight-saving time". Hope Hicks, the director of communications, has announced she is leaving in the coming days. He is someone who has earned the trust of the president and is a top-notch professional, Sean Spicer, former White House press secretary, told Politico in October. Porter had been working on a temporary security clearance, as his background check revealed he had been accused of domestic abuse by two former wives.
Trump reelection campaign manager Brad Parscale announced McEntee's hire alongside that of Katrina Pierson, a Trump campaign spokesperson in 2016 who will join the 2020 campaign as a senior adviser.