Conservatives cheered the administration's decision to bounce Acosta, who never misses an opportunity to attack the president.
White House staffers decide whether journalists are eligible, though the Secret Service determines whether their applications are approved.
In an interview with Fox News on Thursday, senior White House communications advisor Mercedes Schlapp insisted that the intern was "shaken up" and "intimidated" by Acosta and added "what we are seeing is bad behavior that can not be tolerated". A combination of a reduction in the quality of the video, a slowing-down of the video, and the particular vantage point of the CSPAN video gives the appearance that there was more contact between the reporter and the intern than there probably was. "She provided fraudulent accusations and cited an incident that never happened", CNN said.
"We stand by our decision to revoke this individual's hard pass", Sanders captioned a clip from the press conference.
Sanders defended her claim by posting a video on Twitter on Wednesday night.
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Douglas Brinkley, a presidential historian at Rice University, called the White House's response "unprecedented" in the modern era.
That didn't stop Acosta from talking but Trump moved on, calling on NBC's Peter Alexander. "You run CNN, and if you did it well, your ratings would be higher", Trump said. "Distract, make Jim Acosta the story and you don't have to talk about global warming, taxes for rich people", she added.
Mr Watson posted his defence on Twitter, saying: "Here's the video that proves I did not "doctor" or "speed up" the Acosta video, as some media outlets claim".
Mr Trump replied: "I consider it an invasion". Sure. Is it appropriate for the White House to seize the hard pass to obstruct daily access to the White House to someone because the president wants to spar with him and considers him a critic? No. During the intern's final attempt, as she tried to pull the microphone away, Acosta's hand appeared to briefly brush her arm.
The White House News Photographers Association's president Whitney Shefte issued a statement expressing outrage that Sanders "may have shared a manipulated video". "I will not let you down".
CNN executive Matt Dornic accused the White House press secretary of releasing "actual fake news" and called her tweet "absolutely shameful".
"There is only one enemy of the people and he sits in the Oval Office", director Rob Reiner said, in reference to the Trump telling Acosta Wednesday that CNN is the "enemy of the people".