"For the first time in 100 years, and contrary to a long-standing legal prohibition, an active duty military unit is permanently assigned inside the U.S."
"For more than 100 years -- since the end of the Civil War -- deployment of the U.S. military inside the U.S. has been prohibited under The Posse Comitatus Act (the only exceptions being that the National Guard and Coast Guard are exempted, and use of the military on an emergency ad hoc basis is permitted, such as what happened after Hurricane Katrina). Though there have been some erosions of this prohibition over the last several decades (most perniciously to allow the use of the military to work with law enforcement agencies in the "War on Drugs"), the bright line ban on using the U.S. military as a standing law enforcement force inside the U.S. has been more or less honored -- until now."
"Sen. Patrick Leahy (D-Vt.), the ranking Democrat on the Senate Judiciary Committee, warned on Sept. 19 that "we certainly do not need to make it easier for Presidents to declare martial law," but his alarm got no response. Ten days later, he commented in the Congressional Record: "Using the military for law enforcement goes against one of the founding tenets of our democracy."