Universities across the United States opened their doors for the fall semester on Monday, with tens of thousands of students returning to classrooms and residence halls. The University of South Florida welcomed about 50,000 students to its Tampa, St. Petersburg and Sarasota-Manatee campuses, while the University of Tampa saw roughly 12,000 under-graduate and graduate students resume in-person instruction. USF housed about 7,500 students and deployed more than 650 student volunteers to streamline move-in, and the University of Tampa placed first-year students in its 12 residence halls and overflow space at a nearby hotel. Local authorities sought to head off potential safety issues as the academic year begins. Tampa Police reported 19 arrests in a weekend sweep targeting fake identifications and under-age drinking in popular bar districts, warning students that felony charges could follow possession of fraudulent IDs. The return to campus extends well beyond Florida. Faculty at Syracuse University greeted graduate students in advanced media courses, Illinois Governor J.B. Pritzker met students on the University of Illinois Chicago campus, and the University of Arizona marked the first day of classes. Administrators say they are eager for a routine semester after last year’s hurricane-related disruptions in parts of the Southeast.