"The Obama administration has quietly approved a substantial expansion of the terrorist watchlist system, authorizing a secret process that requires neither “concrete facts” nor “irrefutable evidence” to designate an American or foreigner as a terrorist,
“The Obama administration has quietly approved a substantial expansion of the terrorist watchlist system, authorizing a secret process that requires neither “concrete facts” nor “irrefutable evidence” to designate an American or foreigner as a terrorist, according to a key government document obtained by The Intercept.”
See: Secret government rulebook for labelling you a terrorist (The Intercept, link) and document: Rulebook (link)
See also: Hill surveillance reform: Time is not on its side (Politico, link)