The nation’s largest shipper group, the National Industrial Transportation League, is asking President Obama to take action in the event of a work stoppage at East and Gulf coast ports later this month. The International Longshoremen’s Association and their employers, represented by the U.S. Maritime Alliance (USMX), met for three days this week in Florida without coming up with a contract to replace the one that expires on Dec. 29. They will meet again next Tuesday for furth...