WASHINGTON (AP) -- A watchdog group asked the Justice Department on Thursday to investigate whether a Georgia congressman broke the law by not paying taxes and using his office's resources for campaign activities. The complaint comes after media reports revealed that an advertising company owned by the family of Rep. David Scott, D-Ga., owed more than $150,000 in back taxes and penalties, despite getting nearly $500,000 in business from the Atlanta congressman's campaign since he won office in 2002. The Politico Web site first reported the story in May. In its complaint, Citizens for Responsibility and Ethics in Washington also...