“The US military cannot be used for enforcement of civil order within the United States, because of something called the Posse Comitatus act of 1878, which is still in effect.”
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Do you really think that will stop Obama? He has usurped the
constitution from the day he filed to run for POTUS.
On the surface that is true, but behind the first responders are the second responders.
It was under Bush that the US Northern Command was established(by proclamation) and you need to know what their duties are. DHS was created (by Congress) and these DHS grants to local law enforcement are substantial.
The War on Drugs began with Nixon and Reagan was the first to give military surplus to local law enforcement.
There is lots written on this subject but Balko's book, "Rise of the Warrior Cop", published earlier this year is the most comprehensive