In fact just a little over ten years ago a couple of worshipers from Dar al-Hijrah drove up to this particular 7-11. They weren’t really interested in hiring the day laborers so much as getting someone to help them acquire forged identification. That turned out to be a fellow named Luis A. Martinez-Flores, himself an illegal immigrant, and he walked the two Arabs, Hani Hanjour and Khaled Almidhar, through the process of getting Virginia ID cards—after which they returned to this particular 7-11, withdrew $100 from the ATM, and handed it to Mr. Martinez-Flores. Around five years ago Michelle went...