Cyclist investigated for 'obstruction, witness tampering, and intimidation'
                                
                                
                                    (Newser) -
                                    Contrary to  comments yesterday  by a US attorney, federal agents are investigating Lance Armstrong for criminal activity,  ABC News  reports. "Agents are actively investigating Armstrong for obstruction, witness tampering, and intimidation," says a source. US attorney Andre Birotte, who yesterday said feds wouldn't charge Armstrong, "does...