Optional Practical Training visas up

The numbers are up for international students staying in the U.S. on "Optional Practical Training" visas according to the Pew Charitable Trust. The largest number of visa approvals go to STEM graduates and those of Chinese or Indian nationality. The U.S. institutions heading the list with the most graduates granted OPT visas include: 1) University of Southern California, 2) Columbia University, 3) New York University, 4) Carnegie Mellon University, and 5) City University of New York.