Is Deribit allowed in the US?

I've been hearing a lot about Deribit recently and I'm interested in using their platform to trade derivatives in the cryptocurrency market. However, I'm a bit confused about whether or not they are allowed to operate in the United States. Can you clarify if Deribit is legal and authorized to provide its services to traders in the US? I'm concerned about the regulatory landscape and don't want to get into any legal trouble by using an unauthorized platform. Thank you for your help in clarifying this matter.