Students who drop out of school, are expelled or don\'t take a full load of courses are automatically flagged as having broken the terms of their student visas. That happens dozens of times each year at Michigan colleges, often by accident, such as when students drop a class without realizing the consequences for their immigration status, said James Dorsett, who runs Wayne State University \'s Office of International Students and Scholars. The college does what it can to keep students from falling out of status in the first place by warning them if they are about to run afoul of immigration rules, he said. So far, Dorsett said, only one Wayne State student has been arrested for an immigration violation detected by the system.