F.B.I. Casts Wide Net Under Relaxed Rules for Terror Inquiries, Data Show
Charlie Savage for the New York Times (March 26, 2011)
When the Mukasey guidelines went into effect in December 2008, they allowed the F.B.I. to use a new category of investigation called an “assessment.” It permits an agent, “proactively or based on investigative leads,” to scrutinize a person or a group for signs of a criminal or national security threat, according to the F.B.I. manual.
And, the link to the PDF of the FBI’s Domestic Operations and Investigations Guide, Unclassified on 7-8-2009: