Impeachment proceedings are not judicial proceedings; they’re political ones. Both processes use similar language because the process is similar, but they are not connected. Commission of a crime is not required for impeachment proceedings and being impeached by the House and convicted by the Senate conveys no criminal punishment.
Social Security Numbers were never intended to be used the way they are. They were expressly for identifying you to the Feds for the purpose of SSI. Business just looked at that and said “hey, that’s a good way to identify people” and ignored the feds when they asked politely for them to fucking not.