What powers does the Treasury have over Crypto?

I'm curious to know, just how much authority does the Treasury actually wield when it comes to cryptocurrency? Are there specific regulations they've put in place to govern its use and trade? Or is their influence more subtle, shaping the industry through policy recommendations and partnerships? And what about international cooperation – does the Treasury collaborate with other nations' financial authorities to tackle crypto-related challenges? I'd love to get a clearer picture of the extent of their influence and how they're navigating this rapidly evolving landscape.