It wasn't clear why McEntee, a well-liked figure in the White House, had been dismissed, and campaign aides weren't given a reason.
If there was any issue with McEntee inside the White House, Trump's campaign hasn't acknowledged it.
President Donald Trump's re-election campaign announced on Tuesday Mr McEntee would join as a "senior adviser for campaign operations". He was escorted off the White House grounds before he was allowed to collect his belongings, even leaving without his jacket, the Journal reported.
This source says the charges are not Trump related.
People familiar with the matter said that McEntee had been able to obtain a security clearance earlier in Trump's presidency, and speculated that any issues that led to his firing were recent developments. Keith Schiller, Trump's longtime director of security, left the White House in September.
McEntee, who went by Johnny as UConn's starting quarterback in 2011, was working at Fox News after graduation when he joined Trump's campaign as a volunteer and quickly got hired to a full-time position in August 2015.
Katrina Pierson, a Trump campaign spokeswoman in 2016, was also rehired as a campaign adviser in 2020. The role meant McEntee was almost constantly at the President's side.
"As we build out our operations for the 2018 midterm elections and the 2020 reelection campaign, we are pleased to welcome back two outstanding members of our 2016 team", Parscale said in a statement. The cause of the firing was an unspecified security issue, said a third White House official with knowledge of the situation.
"We need the help of proven leaders such as".