Even after reading this, i have the following doubt regarding stamping.
I have a valid H1 visa stamp till 2014. Now if i change to F1 intermittently in 2013 and get back to H1 again by end of 2013 and go to another country (after moving back to H1), should i go for stamping again..in short, my non-immigrant visa status has changed in between but i am trying to renter with the same non-immigrant status..any info or information links would be very helpful, thanks.