See Preventive detention by Nicholas N. Kittrie. They say:
Circulating in White House corridors and through Justice Department offices is a proposal for the creation of a controversial new national system of preventive detentions. This latest proposed anti-terrorism measure might be merely an attempt to better meet the "need to incapacitate dangerous people," or it might extend so far as to encompass the "full gamut of national security issues from intelligence gathering to prosecution."
Not since the infamous 1950 McCarran Emergency Detention Act, passed over President Truman's veto, has serious consideration been given in America to a program that would surrender to the executive branch the power to indefinitely detain security "suspects.”
See also The Back Door Way to Ignore the Bill of Rights which says:
Among the most shocking aspects of Barack Obama’s presidency so far has been his embrace of the power that George W. Bush assumed to incarcerate people suspected of terrorism for the rest of their lives, without a jury trial to determine whether they are in fact guilty of the offense. There is absolutely no reason why Obama and any future president cannot expand that power to other federal criminal offenses, including drug crimes and gun crimes.
And remember the Homeland Security Report that warned police departments of the rise in “right-wing” extremism. And then we have the proposal for preventive detention also circulating in the Obama administration.
Hmmm. A random coincidence?