http://verdict.justia.com/2012/01/02/the-ndaa-explained
"When future historians inquire into how the practice of indefinite military detention without trial became formally entrenched in a country with such strong constitutional safeguards and stringent criminal justice guarantees, they will find that it did not happen all at once, but rather via a series of incremental steps. President Obama is now responsible for three of them. The first was to justify indefinite detention in litigation opposing the release of detainees held at Guantanamo; the second was to issue an executive order on indefinite detention, and the third was to sign the NDAA."