The first is, we are acting very clearly under the authorization of a U.N.

WHITEHOUSE: Press Briefing

"I am not aware of any evidence so far that the Boston suspect is part of any organized group, let alone al Qaeda, the Taliban, or one of their affiliates -- the only organizations whose members are subject to detention under the Authorization for Use of Military Force, as it has been consistently interpreted by all three branches of our government, " he said.

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Robert Chesney, a professor at the University of Texas Law School, said it would be helpful for the administration to clarify which groups or individuals can be targeted under its definition of the congressional authorization.

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United States Armed Forces are detaining in Afghanistan approximately 946 individuals under the Authorization for the Use of Military Force (Public Law 107-40) as informed by the law of war.

WHITEHOUSE: Letter from the President -- War Powers Resolution

Some legal scholars have asked for a fuller accounting of what terrorist groups the administration believes can be targeted under the congressional authorization.

WSJ: U.S. Rethinks Secrecy on Drone Program

He said operators of planes must get a certificate of authorization from the FAA, and the craft are to be flown under 400 feet and primarily in daytime hours.

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Congress should also consider changing the election requirements for de-authorizations to bring them in line with other elections under the NLRA. Unlike other NLRA elections, which require a majority of votes cast, a successful de-authorization currently requires for 50 percent plus one of all workers in the bargaining unit.

FORBES: A Deep Secret That Labor Unions Don't Want Workers to Know