Does the U.S. have a blacklist?

I understand that the world of finance and cryptocurrency is fraught with complexities and regulations, but I'm curious about a specific aspect. Does the United States maintain a blacklist of any kind within the realm of cryptocurrency or finance? If so, what entities or individuals might find themselves on such a list, and what are the consequences of being listed? I'm eager to understand the implications and how it might impact those in the crypto and finance industries.