Man accused of duping Secret Service by posing as Homeland Security agent pleads guilty

One of two men accused of impersonating federal law enforcement officials in a scheme that duped Secret Service agents and others pleaded guilty Monday to multiple charges in Washington, D.C.

Arian Taherzadeh’s plea came nearly four months after his arrest with a second man, Haider Ali, exposed allegations that they compromised Secret Service agents with access to the White House — including at least one assigned to protect first lady Jill…