Exactly the same thing that's been happening across all Europe I guess, in Italy we call it SPID (digital identity public system). Once you give them your ID and you're certified, you can access ANY public office or system via that ID. I love it.
Yes, but you see Europe has functional privacy and consumer protections laws. The USA has functional legalized highway robbery as long as it's done by corporations laws.
This is just verification though, all the communication goes directly to government after it...
Might require issuing some type of new ID number for each citizen, but once that is in place it would massively simplify all the processes.