Federal prosecutors are recommending a 20-year prison sentence for Rochester Proud Boy Dominic Pezzola.
Pezzola was acquitted of the top charge of seditious conspiracy in the Capitol Riot trial in May.
But he was found guilty of obstruction of an official proceeding, and 6 other underlying counts.
And prosecutors want the judge to designate his crimes an act of terrorism.
Pezzola and 4 other Proud Boy leaders were accused of fomenting the Capitol Riot in order to keep Congress from certifying Joe Biden's presidential election victory.
So far, the longest sentence handed down in the Capitol Riot was the 18-year term given to Oath Keepers founder Stewart Rhodes.
Pezzola is due in court for a sentencing hearing later this month.