“The two men had applied to change their tourist visas into student visas in September 2000, after they had enrolled on a professional pilots’ course at Huffman Aviation in Venice, Florida.
But the INS was so slow that no decision had been taken when they finished the course at the end of that year. Both men left and re-entered the US twice in the first half of 2001, which should have invalidated their student visa requests. But instead their applications were approved in July and August, six months after their studies had finished, and weeks before the World Trade Center attacks. It took an INS contractor until March 2002 to send out the notification of approval to their former flight school.”