not doing the same for American college students. Diploma Mill Colleges Many have criticized CPT for incentivizing diploma mill universities. In 2020, Immigration and Customs Enforcement set up the University of Farmington and arrested 250 foreign students for knowingly enrolling in the papermill college, which lacked teachers or classes. Many of the students enrolled in CPT to immediately gain work authorization in the U.S. References External links Practical Training criteria at U.S. Immigration and Customs Enforcement Education in the United States