I'm not sure what Harry Reid is smoking, but there is no such thing as an "undocumented American". Who he's referring to, and using a dangerous term to refer to, are NOT Americans, and are "illegal immigrants".

Maybe he meant "undocumented workers" (which I'd think he'll come out and say he meant). However, he's still not talking about "undocumented workers". That would be someone who is just paid under the table and doesn't pay taxes. The context of the debate is immigration, and those "undocumented" people are "illegal immigrants", not Joe Schmoe day-worker being paid under the table, and not someone who is American.