To Washington, D. C. last week went Baritone Lawrence Tibbett, not to sing but to lobby. As president of American Guild of Musical Artists, Inc., Mr. Tibbett sought the ear of the House Immigration Committee. Chairman of that committee is a citizen of Manhattan's lower East Side named Samuel Dickstein, who made his political reputation framing tenement and kosher food laws. Mr. Tibbett had come to persuade Mr. Dickstein & committee that the present arrangement by which foreign musical artists are permitted to perform in the U. S. is far from kosher...

