WASHINGTON — The FBI is actively monitoring an unknown number of of Americans who have returned to the United States after traveling to areas in Syria and Iraq where ISIS and its allies are active, a senior Obama administration official said Monday.
According to the official, the FBI's counter-terrorism efforts now include "those who have gone, those who have tried to go, those who have come back and are under active [surveillance] — the FBI is looking at them."
Earlier Monday, Secretary of State John Kerry told MSNBC that there were around 100 U.S. passport holders fighting for ISIS in the Middle East.
"We have over a hundred fighters there from America. They have passports. They can come back here," Kerry said.