Comey prepared multiple contemporaneous memos documenting conversations with Trump that made him uneasy in the weeks before his May 9 firing. One memo recounts a February request from Trump that Comey end an investigation into former National Security Adviser Michael Flynn.
Details from those memos have been made public in news media accounts, and Comey himself detailed his conversations with Trump at a Senate hearing last week.
In its complaint, CNN argues that the "urgency and national public importance" in releasing those memos is "unquestionable."
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