Nissan...has rejected a U.S. State Department offer to mediate a dispute between the company and the United Auto Workers over claims of anti-union practices as the UAW tries to organize workers in Mississippi. The UAW was joined by the umbrella labor group IndustriALL Global Union Federation last April in asking the State Department for its help...The State Department said in a statement its role had ended because "a voluntary mediation process could not be established since Nissan was not willing to participate," with the State Department's National Contact Point (NCP), which works to further the Organization for Economic Co-operation and Development's guidelines in the United States. "The NCP regrets Nissan's unwillingness to participate in the process,"...[A] Nissan spokesman said by email that the company declined to participate in the mediation "because long-established guidelines for bringing a union vote already exist," and are set by the U.S. National Labor Relations Board. "Nissan respects labor laws in every nation where it operates and works to ensure that all employees are aware of these laws," the statement said, adding that all Nissan workers have the ability to decide whether they want to be in a union.