Can I use Poloniex in the USA?

I'm curious about the availability of Poloniex in the United States. As a cryptocurrency enthusiast, I've heard of Poloniex's reputation for being a reliable and comprehensive exchange platform. However, I'm unsure if it's accessible for users in the USA. Can you clarify if Poloniex is operational for customers residing in the United States? Additionally, if there are any specific regulations or restrictions that apply to US-based traders using Poloniex, I'd appreciate your insights on that as well.