Which U.S. mints are still open?

As a keen observer of the financial and cryptocurrency landscape, I'm curious to know which U.S. mints remain operational today. Given the evolving nature of our monetary system and the increasing prominence of digital currencies, it's important to understand the physical infrastructure that still underpins our traditional economy. I'm specifically interested in understanding if there have been any closures or consolidations of mints in recent years, and what this might mean for the future of physical currency production and distribution. Could you elaborate on the current status of U.S. mints and any potential implications for the broader financial system?