You're right that internationally-run Tether (USDT) is the largest stablecoin and has opaque reserves.
However, American-run USDC is growing faster and has excellent transparency:
However, American-run USDC is growing faster and has excellent transparency:
https://www.nasdaq.com/articles/us-government-enlists-usdc-f...
https://www.circle.com/blog/circle-partners-with-bolivarian-...