A US visa is valid for Alaska. Considering Alaska is a part of the USA, it is legal. I went to Alaska recently and they accepted my Visa. Hope this Helps!
- PWNAGE LORD
Yes if you do not have any valid US Visa. No if you have a valid US Visa.
Yes, the visa is still valid, but you will have to bring both passports (new & the expired one) every time you use visa.
No
No, unless you already have a valid U.S. entry visa.
None for a US citizen.
A valid passport, and a valid visa.
No
No you can get visa only once. Till your visa is valid you can visit multiple times
Typically the visa is valid for 10years but it's at the discretion of the officers. I've seen medical visas for as little as 6mts
yes. however you must have a valid visa.
Yes, ALL foreigners need a valid work visa to work in the US.
Yes. A UK visa is not a valid Dubai visa