Show Labor Meet Is II Postponed Washington A A conference between Mexican labor leaders and officials official n Df he e American Federation of Labor originally arranged to be bo held In fn Washington July 23 to consider Mexican Mex Mex- lean ican migration to the United States has been postponed until late In Au Au- gust William Green president of ot the federation announced that the postponement had been agreed upon because Louis N Morones secretary of the Mexican govern government ment department depart ment of commerce and labor could not come t to Washington until the later date |