Agents at the U.S. Citizenship & Immigration Services — formerly the INS, and still la migra — believe that 13 percent of H-1B visa petitions sponsored by companies are fraudulent. Big companies like Microsoft and Google are pushing for more visas because they say America just lacks competent tech workers. Worker-rights groups complain that foreign workers create wage depression and mistreatment. Who's right? When your employer has layoffs, watch to see who gets the axe. [BusinessWeek]