The threats followed a video statement by Kelly and other lawmakers with military backgrounds, advising troops they “can and must refuse illegal orders.”
The administration, including Donald Trump, responded with 'extreme rhetoric and punitive retribution', publicly branding Kelly's statements as seditious and treasonous.
Kelly's lawsuit argues that these actions imperil protected speech, chill legislative oversight, and threaten retired service members with retaliation for political speech.
He seeks a federal judge's intervention to preserve his First Amendment rights and due process, and to block the administration's 'unlawful and unconstitutional' actions.