WHILE NOT AS LARGE as in many other Western countries, ISIS-related mobilization in the United States has been unprecedented. As of the fall of 2015, U.S. authorities speak of some 250 Americans who have traveled or attempted to travel to Syria/Iraq to join the Islamic State in Iraq and Syria (ISIS) and 900 active investigations against ISIS sympathizers in all 50 states. ƒ Seventy-one individuals have been charged with ISIS-related activities since March 2014. Fifty-six have been arrested in 2015 alone, a record number of terrorism-related arrests for any year since 9/11…..