Can US citizens use Bittrex?

Are US citizens permitted to utilize the cryptocurrency exchange platform known as Bittrex? It's important to be mindful of the legal frameworks surrounding cryptocurrency transactions in the United States, and whether Bittrex adheres to these regulations. As an individual residing in the US, it's crucial to clarify if accessing and engaging in activities on Bittrex is not only permissible but also in compliance with all relevant laws and policies. Clarification on this matter would ensure that one's investments and transactions remain legal and unhindered.