Capitol

Trump has denied responsibility for the rioting, which left five people dead, including a police officer. His office did not immediately return a call for comment on the lawsuit.

The incident took place following the state legislature's passing of a bill that would institute several restrictions on voting access.

Both are presently free on bail. Prosecutors are seeking to revoke their pre-trial release and to have them detained before trial.

"I believe the facts do support those charges," said acting US Attorney Michael Sherwin for the District of Columbia. "I think that, as we go forward, more facts will support that."

So far, the FBI has arrested 300 people involved in the insurrection. Some 65 were arrested for assaulting law enforcement officers.

Americans view prosecution of the Capitol rioters as "very important," and a similar share sees political extremism as a "major problem" for the country, according to Pew Research Center.

Only the notorious Joseph McCarthy rivals Johnson as the worst senator in Wisconsin’s history.

The visit came at the invitation of Nachman Mostofsky, executive director of a politically right-wing Orthodox organization and the brother of Aaron Mostofsky, who was arrested by the FBI.

A law enforcement source familiar with the matter said it is still too early in the probe to know if Tanios or Khater directly bear any responsibility for Sicknick's death.

The tract, originally published in the early 20th century, is described by the Anti-Defamation League as "a classic in paranoid, racist literature."