I am a dual national of Iraq and UK, my ESTA was denied in 2010 for unknown reason. No explanation was given, therefore I had to go for visa in US embassy and I was granted 10 years valid visa with multiple entry. I have been to US few times since then.
My question is under new restrictions for dual nationals, is this visa still valid or do I need a new visa as the situation is quite confusing ?
It's difficult to prove a negative but I haven't heard of any change to the visa regulations. In fact, the changes to the visa waiver program are explicitly intended to force people in your situation to apply for a visa, which you already did, so I would assume that yours is still valid. Per the official website:
These individuals will still be able to apply for a visa using the regular appointment process at a U.S. Embassy or Consulate.
