The Portuguese suspect in the Brown University and MIT shootings came to the United States through a little-known pathway called the diversity immigrant visa. That program makes up to 50,000 green cards available every year by lottery to people from countries that weren't well represented in the numbers of immigrant admissions to

Matthew Wang, a Brown University freshman from Virginia, has been identified as one of the students injured in the Dec. 13 shooting in the Barus & Holley building.