WASHINGTON — Former Proud Boys leader Enrique Tarrio was sentenced Tuesday to 22 years in prison for orchestrating a failed plot to keep Donald Trump in power after the Republican lost the 2020 election, capping the case with the stiffest punishment that has been handed down yet for the U.S. Capitol attack.Tarrio, 39, pleaded for leniency before the judge imposed the prison term topping the 18-year sentences given to Oath Keepers founder Stewart Rhodes and one-time Proud Boys leader Ethan Nordean for seditious …