Btw - I'd love to see the people who put this memo together re-evaluate the ID.me system they're implementing for citizens given how poor the identity verification is.
ID.me supports WebAuthn (or maybe U2F? In this context it doesn't matter) but importantly it does identity verification so it can determine whether I am a US citizen, whether I'm a tax payer, and if so which one.
Now, perhaps the US Federal Government should own the capability to do that instead of a private company. But, so far as I can tell, they do not and login.gov is not such a thing.
Login.gov also supports WebAuthn.