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The Boston Globe

Metro

Student visa system gets scathing review

Homeland Security officials have redoubled their efforts to check foreign students’ visas at airports and border crossings since a Kazakh student charged with destroying evidence in the Boston Marathon bombings used an invalid visa to reenter the United States in January.

Azamat Tazhayakov, a friend of suspected bomber Dzhokhar Tsarnaev, passed through a security checkpoint at New York’s John F. Kennedy International Airport 16 days after the University of Massachusetts Dartmouth notified federal officials that his low grades had invalidated his student visa.

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