MEXICO CITY - Alejandro Doran Dorado has lived in the United States so long -- 15 years -- that he's applied for legal residence. And thanks to a Mexican government identification program, he carries an official ID card, called matrícula consular, that makes him feel almost legal today -- able to get a driver's license, open a bank account, even board an airplane in the United States.With the card in his pocket showing his U.S. residence, he feels confident crooning ranchera songs at bars on weekends, driving a cab during the week and visiting Mexico City. Technically, he is supposed...