Carlos from Spain:
RC:

My wife gets "flagged" every single time when we enter the US, so we need to go to the immigration officer and re-do the whole thing. Why? She has a double first name with a dash between the two names and the system cannot read the dash, so it "flags" my wife and we have to go through the person to person check. Smiley Great technology. LOL

Same thing happened to my wife the last time we visited the US. My daughter and I have US passports but my wife is spanish and therefore has a compounded first & middle name and two last names (first from father and second from mother). Well apparently the inmigrations officers take the first name only and the second last name as the last name, which should be the opposite, first & middle are one single name, and then the real last name is the first last name, not the mother's side last name. Long story short its not her name they use and it comes out to be a be very general comon name in spanish language, equating to the typical "John Smith" in english. So it gets flag because apparently there is a "John Smith" on the blacklist obviously, there must be hundreds. Ironically her real last name is very very rare. ...

This is crazy.