Is Pionex banned in the US?

I've been hearing rumors that Pionex, a popular cryptocurrency trading platform, might be banned in the US. Can you confirm if this is true? If so, why was the ban imposed and what does it mean for US-based cryptocurrency traders who have been using Pionex? Are there any alternatives to Pionex that are available and trusted in the US market? I'm really concerned about my investments and want to make sure I'm staying compliant with regulations.