Advocatus Diaboli sends this report: 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. ...The heart of the document revolves around the rules for placing individuals on a watchlist. "All executive departments and agencies," the document says, are responsible for collecting and sharing information on terrorist suspects with the National Counterterrorism Center. It sets a low standard—"reasonable suspicion"—for placing names on the watchlists, and offers a multitude of vague, confusing, or contradictory instructions for gauging it. In the chapter on "Minimum Substantive Derogatory Criteria"—even the title is hard to digest—the key sentence on reasonable suspicion offers little clarity.