Why is OKX banned in the US?

Why has OKX been banned in the United States? Could it be due to regulatory concerns? Or is it because of the exchange's potential links to unauthorized financial activities? The decision seems puzzling, given the increasing popularity of cryptocurrencies globally. Has the US government identified specific risks associated with OKX that justify this ban? It's intriguing to understand the rationale behind this move, especially considering the rapid evolution of the crypto market. Is there a larger regulatory framework being considered that might explain this ban? Or is it simply a case of the US taking a cautious approach towards this emerging asset class? It would be interesting to hear more about the reasons behind this decision.