WASHINGTON (Reuters) -The former chairman of the U.S. right-wing group the Proud Boys, Enrique Tarrio, was arrested on Tuesday on a conspiracy charge for his alleged role in plotting the January 6, 2021, assault on the Capitol in a bid to block certification of President Joe Biden's election. right-wing group the Proud Boys, Enrique Tarrio, was arrested on Tuesday on a conspiracy charge for his alleged role in plotting the January 6, 2021, assault on the Capitol in a bid to block certification of President Joe Biden's election.Other members of the Proud Boys removed Tarrio from their private chatrooms early...