At least four international students at both Stanford University and UC Berkeley had their U.S. visas abruptly revoked, officials at both universities confirmed this week.  Four current Stanford students and two recent graduates were among those impacted,

The visas issued to six students at both UC Berkeley and Stanford were revoked by the federal government in the past week, according to campus officials.

An immigration attorney says the revocation of student visas from UC Berkeley and Stanford University is unprecedented. UC Berkeley said six students saw their visas revoked. Stanford University learned that four of its students and two recent graduates had their student visas revoked.