A careful study of the FBI’s own data on terrorism in the United States, reported in Trevor Aaronson’s book The Terror Factory, finds one organization leading all others in creating terrorist plots in the United States: the FBI.

In the days before Thursday’s start to the trial for alleged Portland Christmas Tree bomber Mohamed Osman Mohamud, pre-trial hearings revealed two new details. First, the government failed to reveal to the defense an effort to “pitch” Mohamud on October 27, 2009, 13 months before they arrested him in an FBI-created plot. This comes on top of earlier revelations about a key meeting the FBI failed to tape, another failure to reveal FBI contacts, and Abu Zubaydah’s brother’s claim that, as an FBI informant, he was asked to track the then-16 year old Mohamud as early as 2008.