Is Phemex restricted in the US?

Could you please clarify if there are any restrictions on Phemex in the United States? Are there any legal limitations that prevent US-based individuals or entities from accessing or using Phemex's cryptocurrency exchange services? Additionally, are there any geographical restrictions or limitations on the services offered by Phemex within the United States, or are there specific states where Phemex's services are not available? Understanding these details would be crucial for anyone interested in utilizing Phemex's platform.