The following letter appeared in yesterday's NY Times:
"To the Editor:
"Question for all those geniuses on Capitol Hill discussing a five-year waiver for illegal immigrants:
"If they're illegal and undocumented, how will you know if they've been here five years or five minutes?
"David Strickland, Fort Lauderdale, Fla."
This is a very good point which, I'm sad to say, had never occurred to me.