Teamsters President James Hoffa and the National Labor Committee has called on the State Department to urge the president of El Salvador to investigate the killing of Gilberto Soto, an American citizen and trade union leader who was shot dead on Nov. 5 while visiting El Salvador in part to organize workers. Soto was a longtime organizer with the International Brotherhood of Teamsters who lived in New Jersey. Earlier this week Hoffa and AFL-CIO President John Sweeney met with Salvadoran Ambassador Rene Leon to ask for help in for an investigation. Soto died one day before his 50th birthday.