Atta had fake passports, too, and could have easily used them to fakeout the INS.
Well, we know he had fake travel docs on his last trip to Prague; we know Ramzi Yousef used a fake passport to get to Iraq gfrom NYC after the WTC bombing. Why in the world would anyone give this much weight to the absence of INS records showing Atta here in 2000 after all that?(And as Steyn observes we DO have 11 million aliens in the US for whom INS has no valid records.)