Mahmoud Khalil, detained Columbia grad, set for critical immigration hearing

Mahmoud Khalil, the Columbia University graduate student and lawful permanent resident who has been detained by immigration authorities since March, is scheduled to appear at a pivotal immigration hearing Thursday that could determine his future in the United States.

​ Mahmoud Khalil, the Columbia University graduate student and lawful permanent resident who has been detained by immigration authorities since March, is scheduled to appear at a pivotal immigration hearing Thursday that could determine his future in the United States. Read More Breaking News, Latest News and Videos | CNN