The National Security Agency recently used a novel argument for not holding onto information it collects about users online activity: it's too complex. The agency is facing a slew of lawsuits over its surveillance programs, many launched after former NSA contractor Edward Snowden leaked information on the agency's efforts last year. One suit that pre-dates the Snowden leaks, Jewel v. NSA, challenges the constitutionality of programs that the suit allege collect information about American's telephone and Internet activities. In a hearing Friday, U.S. District for the Northern District of California Judge Jeffrey S. White reversed an emergency order he had...