Can I use CEX.IO in the USA?

Could you please clarify whether CEX.IO is accessible and operational for users located in the United States? I'm interested in knowing if there are any restrictions or limitations for American citizens looking to utilize the platform for their cryptocurrency trading and exchange needs. Additionally, are there any specific regulatory requirements or steps that need to be followed to ensure compliance while using CEX.IO within the USA? Thank you for your time and assistance in addressing this question.