FBI counterterror chief to date : Terrorist recruitment is ' growing ' . There 's growing concern about homegrown violent extremism in the aftermath of last month 's terror attacks in Paris . Steinbach says ISIS has recruited U.S. women as young as 15 . Steinbach : ISIS recruiting is ' more than we ' ve ever seen by a terrorist . '
FBI counterterror chief to date : Terrorist recruitment is ' growing ' . Steinbach says ISIS has recruited U.S. women as young as 15 . Steinbach : ISIS recruiting is ' more than we ' ve ever seen by a terrorist . '