JuanCarlos....
While it's true that a SS card and a DL have little to do with citizenship, those are qualifying documents on the I-9 form that we're all supposed to fill out when we take a job, so they're relevant to this discussion.
As to the validity of those documents, few seem to realize that there was a (free) way for employers to validate SS numbers up until GWB took office. Clinton/Gore set that up as part of Al Gore's "reinventing government" project in the late 1990's. IIRC, the Clinton administration wanted to make use of that service mandatory for all employers, but it never got that far. Shutting down that (purely voluntary, with no penalties for not using it) program was the US Chamber of Commerce's first request and #1 priority for the incoming Bush adminstration. If memory serves, it was Bush 2.0's first executive order. This is nothing more than preserving "plausible deniability." "What? Those documents were fakes? How was I supposed to know?"
Now do you see where the problem lies?
--Shannon