EXCLUSIVE: How the FBI Foiled a 2012 Plot to Bomb the US Capitol

EXCLUSIVE: How the FBI Foiled a 2012 Plot to Bomb the US Capitol, The arrest Wednesday of an Ohio man who allegedly plotted an all-out assault on the U.S. Capitol was not the first time the FBI nabbed someone for such a plot through an undercover operation – and surveillance video, exclusively obtained by ABC News from that earlier case, shows just...