Trump’s administration initially said Acosta was banned for inappropriately touching a White House female intern as he struggled to hold on to a microphone. The White House cited a video which analysts said had been sped up, giving the appearance that Acosta struck the intern’s arm.
Trump later said other journalists might be barred as well if they were not “respectful.”
Free speech activists have warned the case has important implications, and that public officials should not be able to bar access to journalists if they dislike news coverage.
The White House has dismissed CNN’s complaint as “grandstanding” and vowed to “vigorously defend” against the lawsuit.