A mass deployment of troops and police across the country turned statehouses into citadels. But, for the most part, far-right groups stayed away from protests on Sunday.
After the White House declined to pursue a unified national strategy, governors faced off against lobbyists, health experts and a restless public consumed by misinformation.
An ideological jumble of far-right extremists and hate groups flourished under President Trump and claimed new energy after the attack on the Capitol. Now they are debating their next moves.
State officials are activating National Guard troops and closing off Capitol grounds in response to F.B.I. warnings that armed protesters are preparing to act.