The NDAA-Puzzle

On December 15, the final version of the National Defense Authorization Act (NDAA) for Fiscal Year 2012 has been approved by the US Senate. Since then, there were discussions about the question whether the new law allows indefinite detention of US citizens by the military (on US soil).
E.g. Senate votes to allow indefinite detention of Americans, Senator Bob Casey says the NDAA will NOT be used against the American people. Needless to say, this issue is crucial, alarming and should be monitored.

But even law academics seem to have problems in analyzing the law in order to give the text a definite meaning.