Advertisement Employers who have employed F-1 students in the Science, Technology, Engineering, and Mathematics (STEM) category of the Optional Practical Training (OPT) program can expect site visits by the Student and Exchange Visitor Program (SEVP). The March 2016 STEM OPT rule allows the United States Department of Homeland Security (DHS) to conduct site visits of employers … Continue reading An Overview of STEM OPT Employer Site Visits