WASHINGTON — Acknowledging widespread security lapses within the nation's immigration system, the Bush administration announced Wednesday it is opening anti-fraud task forces in 10 cities, including Atlanta, to crack down on fake driver's licenses, passports and other methods used to obtain immigration benefits. "Millions have used fraudulent documents" to obtain work permits or to provide cover for criminal or terrorist activities, said Julie Myers, assistant Homeland Security secretary for Immigration and Customs Enforcement, who cited "an epidemic" of bogus identification documents generated by highly sophisticated crime networks. The enforcement initiative, which combines Homeland Security immigration agencies, the U.S. Department of...