California's attorney general is suing one of the nation's largest banks, alleging that JPMorgan Chase & Company used illegal tactics in its debt collection efforts against about 100,000 credit card holders. The lawsuit says the company filed thousands of debt collection lawsuits each month between 2008 and 2011 using improper practices that shortcut procedures required under California law. Attorney General Kamala Harris says the company's methods included "robo-signing" legal documents as it flooded the court system seeking judgments and wage garnishment orders against borrowers.