could you have transferred your credits to a U.S. undergraduate institution?
It is possible to continue on US school for master program if you have finished bachelor degree (if moving from overseas)
During studies it is pretty complicated to transfer. It is somehow possible if it is done after the first semester or first year. Anyway this is ytoo expensive.
Freshmans have easier life.
And of course if I am gonna to be guestioned this way ...
yes I could simply gave up studies and start in USA from a scratch and green card is valuable for me. But it is not really worth of throwing moneys and time from the window as we say.