Update, the government now can watch you or put you on a list for up to 5 years even if not considered a terrorist.
Despite what were told, a violation of constitutional principles and of the Bill of Rights. Below is citation from wiki but a few days ago he stated the above mentioned.
The National Defense Authorization Act (NDAA) for Fiscal Year 2012 was signed into United States law on December 31, 2011 by President Barack Obama.
The Act authorizes $662 billion in funding, among other things "for the defense of the United States and its interests abroad." In a signing statement, President Obama described the Act as addressing national security programs, Department of Defense health care costs, counter-terrorism within the U.S. and abroad, and military modernization.The Act also imposes new economic sanctions against Iran (section 1045), commissions reviews of the military capabilities of countries such as Iran, China, and Russia, and refocuses the strategic goals of NATO towards energy security.
The most controversial provisions to receive wide attention are contained in Title X, Subtitle D, entitled "Counter-Terrorism." In particular, sub-sections 1021 and 1022, which deal with detention of persons the government suspects of involvement in terrorism, have generated controversy as to their legal meaning and their potential implications for abuse of Presidential authority. Although the White House and Senate sponsors maintain that the Authorization for Use of Military Force (AUMF) already grants presidential authority for indefinite detention, the Act states that Congress "affirms" this authority and makes specific provisions as to the exercise of that authority. The detention provisions of the Act have received critical attention by, among others, the American Civil Liberties Union (ACLU), the Bill of Rights Defense Committee, and some media sources which are concerned about the scope of the President's authority, including contentions that those whom they claim may be held indefinitely could include U.S. citizens arrested on American soil, including arrests by members of the Armed Forces.
Indefinite detention without trial: Section 1021
All persons arrested and detained according to the provisions of section 1021, including those detained on U.S. soil, whether detained indefinitely or not, are required to be held by the United States Armed Forces. The law affords the option to have U.S. citizens detained by the armed forces but this requirement does not extend to them, as with foreign persons. Lawful resident aliens may or may not be required to be detained by the Armed Forces, "on the basis of conduct taking place within the United States