Agency Frees Groups From Ad Ban By SHARON THEIMER The Associated Press WASHINGTON (AP) - The Federal Election Commission on Thursday freed tax-exempt charitable and religious groups from political ad restrictions imposed by the new campaign finance law. The commission voted 4-2 to exempt such organizations from the law's provision that bans interest group ads for a month before a primary election and for two months before a general election if they name a federal candidate and are paid for with unlimited corporate or union contributions. Sponsors of the law contend that the tax-exempt groups are among those who have...