CNN has filed a lawsuit against President Trump and some of his aides, following the suspension of their journalist Jim Acosta’s press pass to the White House, after Acosta was involved in a verbal exchange with the President in a press conference.

The lawsuit alleges that Acosta and CNN’s first and fifth amendment has been violated by the ban, and seeks to restore Acosta’s access to the White House.

CNN said if left unchallenged, the actions of the White House would create a dangerous chilling effect for any journalist who covers America’s elected officials.