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The White House is seen behind a lawn blanketed with snow on January 22, 2014 in Washington, DC.  The northeastern US shivered amid heavy snowfall and far below average temperatures Wednesday in a storm that grounded thousands of flights and triggered traffic chaos. AFP PHOTO/Mandel NGAN        (Photo credit should read MANDEL NGAN/AFP/Getty Images)
The White House is seen behind a lawn blanketed with snow on January 22, 2014 in Washington, DC.  The northeastern US shivered amid heavy snowfall and far below average temperatures Wednesday in a storm that grounded thousands of flights and triggered traffic chaos. AFP PHOTO/Mandel NGAN        (Photo credit should read MANDEL NGAN/AFP/Getty Images)

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    FBI: Terror suspect vowed to shoot Obama

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FBI: Terror suspect vowed to shoot Obama

Three men have been arrested in New York City, and charged with conspiracy to help ISIS. CNN's Michelle Kosinski reports.

FBI: Terror suspect vowed to shoot Obama

Three men have been arrested in New York City, and charged with conspiracy to help ISIS. CNN's Michelle Kosinski reports.