The National Defense Authorization Act is a United States federal law that has been enacted recently, December of 2011, to specify the budget and expenditures of the United States Department of Defense.

http://jus.com.br/revista/texto/20889/comentarios-ao-national-defense-authorization-act

http://www.nytimes.com/2011/12/15/us/politics/obama-wont-veto-military-authorization-bill.html

http://blogs.wsj.com/washwire/2010/12/22/congress-finally-passes-defense-policy-bill/