The Environmental Protection Agency is being investigated for allegedly using personal email accounts in order to get around public records laws, according to U.S. District Judge Royce Lamberth. The judge has given conservative law firm Landmark Legal Foundation permission to investigate whether EPA officials used personal accounts for business and excluded these emails from the law firm’s Freedom of Information Act (FOIA) request when the firm sued the government agency last year. The ruling could expose the EPA's record keeping techniques.