Can U.S. citizens use Bittrex?

Hello, I'm curious about the availability of Bittrex for U.S. citizens. As a cryptocurrency enthusiast, I've heard a lot about the platform's robust security and diverse coin offerings. However, with the ever-changing regulatory landscape in the United States, I'm unsure if U.S. residents are allowed to use Bittrex. Could you please clarify if U.S. citizens can access and trade on Bittrex, and if there are any specific restrictions or requirements that need to be met? Thank you for your time and assistance.