The US Login.gov idp is about to roll out identity attestation using your state issued government credential provisioned in your mobile wallet (mDL), for example. I can perform identity proofing and attestation with my digital driver's license and passport in my iPhone Wallet today (at a TSA or CBP checkpoint, for example). Why can I not login to Google and Apple with that identity? It is federated identity management fundementally.
https://zendesk.login.gov/hc/en-us/articles/51945946704148-m...