NEW YORK -- BP's other troubled offshore oil rig in the Gulf of Mexico has been cleared to operate despite some problems in documentation, according to a long-delayed government report obtained by The Huffington Post.Though BP failed to file with regulators "certain drawings depicting changes to a number of production safety system components" for the massive Atlantis rig, the government agency charged with overseeing offshore oil drilling "found no grounds for suspending the operations of the Atlantis ...