The Patriot Act and the National Defense Authorization Act were created to give the government the power to survey and detain the public as well as call up U.S. and foreign army against us.

http://www.fincen.gov/statutes_regs/patriot/

http://www.forbes.com/sites/erikkain/2012/01/02/president-obama-signed-the-national-defense-authorization-act-now-what/

www.army.mil/usapa/epubs/pdf/r210_35.pdf

http://lewrockwell.com/rep3/us-internment-camp-plan.html