Directive No. Circumvents Posse Comitatus , Allows Obama To Use Military Against Citizens
Posse Comitatus (organization) - Wikipedia
Posse comitatus is the common-law or statute law authority of a county sheriff or other law officer to conscript any able-bodied man to assist him in keeping the peace or to pursue and arrest a felon, similar to the concept of the "hue and cry". Originally found in English common law, it is generally obsolete; however, it survives in the United States, where it is the law enforcement equivalent of summoning the militia for military purposes.