My opt expries at jan 27 and I got an admission in phd which starts at jan 13. I am going Nepal applying new visa according to new I20 (phd) but still I can work up to jan 13 from the old I20. What would happen if I apply OPT extension before jan 13 coming back from Nepal (Can I have right not to go PhD and continue my OPT) or once I have new I20, I should go to PhD (according to immigration). As it is completely new practice OPT extension, do you have any idea? As I am applying visa for me and my wife, what would happen to my wife?