PBS NewsHour

How the US tracks ISIS threats at home

Clip: 03/01/2015 | 4m 12s

Federal investigators believe they’ve managed to capture three suspected ISIS sympathizers before they launched an attack in the United States. Andrew Grossman of the Wall Street Journal, who has been following this story, joins Hari Sreenivasan from Washington.

Aired: 03/01/15

Rating: NR

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