Dont know if this is the right forum, but it didnt seem geographically too far off 
I believe i am in a slightly unique situation at this time, or at least unusual to say the least. I am a British citizen who lives and works in the US on a work visa. Recently my 1st visa ran out, i have the renewal papers all signed and ready (i am legally able to stay here and work til i get this done), but require to get back to the UK to have a new visa stamped in my passport. So to my mind i am able to stay within the US territory until i have vacation, cash and suitable opportunity to do this little 2 week trip.
So that is the background, my actual question relates to travelling to one of the non-50 states US territories, ie USVI or PR. Do you need a passport to enter them if you are leaving the US and returning there? If i fly to another state all i need is my drivers license and i am good to go, this also includes those not directly connected with mainland US, such as Hawaii or Alaska. I was therefore wondering if these two great dive destination required me to show my visa for re-entry into US (as it hasnt been restamped that is not a possibility)? I would hate to be stranded in a country due to this - i will also ask my immigration lawyer, but thought i would quiz you guys on whether you have to show passports or get a visa when you do the trip either way.

I believe i am in a slightly unique situation at this time, or at least unusual to say the least. I am a British citizen who lives and works in the US on a work visa. Recently my 1st visa ran out, i have the renewal papers all signed and ready (i am legally able to stay here and work til i get this done), but require to get back to the UK to have a new visa stamped in my passport. So to my mind i am able to stay within the US territory until i have vacation, cash and suitable opportunity to do this little 2 week trip.
So that is the background, my actual question relates to travelling to one of the non-50 states US territories, ie USVI or PR. Do you need a passport to enter them if you are leaving the US and returning there? If i fly to another state all i need is my drivers license and i am good to go, this also includes those not directly connected with mainland US, such as Hawaii or Alaska. I was therefore wondering if these two great dive destination required me to show my visa for re-entry into US (as it hasnt been restamped that is not a possibility)? I would hate to be stranded in a country due to this - i will also ask my immigration lawyer, but thought i would quiz you guys on whether you have to show passports or get a visa when you do the trip either way.