Stewart Rhodes is on trial in federal court in Washington along with four people described by prosecutors as “top lieutenants” in the militia-movement group he founded, the Oath Keepers. Rhodes is the highest-profile defendant charged so far in the investigation into the Jan. 6, 2021, attack on the U.S. Capitol and is accused of steering a months-long effort to prevent by force the swearing-in of President Biden. Rhodes is among 14 fighting the historically rare charge of seditious conspiracy in what the government has called one of the largest investigations in U.S. history.