Prosecutors withheld evidence about the key FBI operative's handling of an informant gone wild and now in the pokey in an unrelated case, as detailed here:
According to defense lawyers, the government’s star witness in the Hutaree case, FBI agent Stephen Haug — who spent months spying on the group while undercover — was the FBI handler for the New Jersey informant. The informant, Hal Turner, was a right-wing radio host and blogger who made threats against critics and public officials while on the FBI payroll.