CBS News: A handful of lawmakers today joined calls for investigations into whether Rupert Murdoch's media conglomerate News Corporation violated U.S. law by allegedly obtaining phone records illegally. Democratic Sens. Barbara Boxer and Jay Rockefeller sent a letter to Attorney General Eric Holder and Securities and Exchange Commission Chairman Mary Schapiro, asking them to investigate News Corp., which is incorporated in the U.S. Sen. Democratic Sen. Frank Lautenberg sent a separate letter to Holder and Schapiro with the same request.