[I]n regard to cash deposits, the stablecoin investors will have priority over the claims of ma-and-pa for their bank deposits (and thus over the FDIC's subrogation claim when it pays ma-and-pa).

Yes, you read that correctly: Congress is about to put the claims of stablecoin investors ahead of ma and pa's bank deposits. That's just stunning. Now ma-and-pa's deposits are FDIC insured, so they'll be alright, but it means the FDIC's Deposit Insurance Fund is footing the bill. In other words, the GENIUS Act is subsidizing stablecoin issuance on the back of bank deposits. By subordinating the FDIC's subrogation claim in a bank insolvency to the claims of stablecoin investors, the GENIUS Act is effectively letting FDIC insurance leak out to cover uninsured stablecoins, without any insurance premiums paid.