Upvote:10
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.