Is KuCoin illegal in the US?

Hello there, I've been hearing some buzz about KuCoin recently and I'm curious to know if it's legal to use in the United States. I understand that cryptocurrency regulations can vary widely from country to country, so I'm wondering if KuCoin falls within the legal bounds of operation in the US. Could you shed some light on this for me? Are there any specific restrictions or regulations that I should be aware of when using KuCoin in the US? Thanks in advance for your help!