My h1B visa expired on 15th March 2012. I applied for I-94 extension and it got approved from USCIS and I received a new petition and new I-94 till 16th March 2015. But the visa stamp on my passport shows expired date of 15th March 2012.
I am planning to go for a Alaska trip (direct flight from Missouri to Anchorage and back) in July. I want to know whether I can travel to Alaska during the extension period, as Alaska is a state not in mainland USA. Also, do I need to surrender my I-94 at the airport while leaving for Alaska? Is there any customs/ immigration check while travelling to Alaska?
Also, do I require to carry any special documents apart from the passport, new petition and new I-94?