Is BYDFi legal in the USA?

Good day, I'm interested in understanding the legality of BYDFi in the United States. Could you please clarify whether BYDFi is a legitimate and legally recognized cryptocurrency or financial platform operating within the country's regulatory framework? I'd appreciate it if you could also provide any insights into any potential regulatory hurdles or compliance issues that BYDFi may face in the US market. Thank you for your time and expertise.