SEVIS launch (2003)
After the September 11 attacks, in which two hijackers held student visas, Congress ordered all foreign students tracked in the Student and Exchange Visitor Information System. Schools reported enrollments, addresses, and violations for the first time.
Students became visible to immigration authorities; overstay monitoring began.
The tracking infrastructure that now carries fixed expiration dates was built; duration of status remained the rule for two more decades.
The 2026 rule layers a hard expiration date onto the tracking system SEVIS created.
