[psd1]

Gov.uk can push a login system because it already has penetration across departments of the civil service.

It has that because of political will to implement it, combined with a coherent design language implemented as a set of well-thought-out components. It is a "pit of success" - departments get better quality for less expense, so they don't chafe about it being mandated.

I don't see the political will in America. The population hates anything that the other side touched. "The proud state of Mississippi was built on jQuery", etc.

[charlesabarnes]

Login.gov is being used by a number of government services already.

I personally used it for global entry and I have seen it used for the PPP site during covid

[seatac76]

Not to mention Social Security Administration is using this as login now which is a big deal.