If there are in fact "sleeper cells" here, the only reason for terrorists to infiltrate here would be to bring in *something* that's not already here. Information is one possibility. Biological agents are another.
On the other hand... if the "sleeper cells" really don't exist, or if they're "staffed" by the likes of Jose Padilla, the terrorists would have to infiltrate themselves in order to conduct an attack.
I'd really like to know myself why this is so? Why have they been so slow to help this country? Anyone...anyone???
Okay, you're trolling, but I'll bite.
The Islamic element throughout Western civilization does not consider itself a part of the former. It uses the freedom which Western society provides, to organize the destruction of that society. It does not believe in the rule of secular law, in freedom of speech (or anything else), and intends to destroy us all from within. It has no intention of assimilating with us, but intends only the Islamicization of the West - by any means necessary, since Allah condones anything that produces more Muslims.
To the average Muslim, Al Quaeda is only to be admired for doing what he or she himself is unable or unwilling to do. Therefore, don't hold your breath waiting for the (mislabeled) "Good" Muslims to turn in their terrorist "Brethren".
Yes, yes, you're right, I am trolling, but the trolls are all asleep, it seems. Thanks for biting though.