The context in which you used "was" didn't make it entirely clear.
He stated further that it was just unclassified and he was given the nod to go public...
Interesting claim. Generally, Congressmen do not publicly release information from the executive branch.
the truth here is probably someplace in between:
- have some ME people come into the country illegally via Mexico (and Canada)? of course they have, there have likely been some arrests, etc.
- are all of these people AQ sleeper agents? of course not. most of them are likely trying to get into the US for the same reasons everyone else sneaks in here.
- does the government have some information that indicates that this might be a method the domestic AQ structure can use to bring in people? yes, they do. remember, we are watching and monitoring many of these people 24x7. ready to pounce on them if needs be, but otherwise monitoring and listening to their communication intercepts, etc.
let's see, perhaps there will be some followup to this story - if its really been de-classified, I would expect to see some supporting evidence released as to some specific activities that have been uncovered.