I'm drawing a blank on a treason or sedition trial with that caption. Do you have a court, year, or other more specific citation?
The 1997 US v. Booth is a 1st circuit case on firearms possession by a felon.
John Wilkes Booth and company following Lincoln assassination. Treason was not specified I believe, but conspiracy was. The current imbroglio fits the same description without the presidential death.
John Wilkes Booth, maybe?