The person who smashed the head of a Capitol Policeman (who incidentally was a Trump supporter) with a fire extinguisher and killed him, as well as others who caused deaths and injuries, and vandalism to our Capitol.
By that definition, anyone who harbors someone who robs a bank and shoots at the pursuing police are guilty of giving aid and comfort to our enemies.
That phrase is meant to stand alongside treason as a high crime against the nation, such as spying for a foreign nation or acting on their behalf in staging an attack against American forces.
That is not what the few people did at the Capitol building.
-PJ