APPEAL FROM THE SUPREME COURT OF ARIZONA. No. 27. Argued November 8-10, 1948. Decided January 3, 1949. 1. The amendment to the Arizona Constitution which provides that no person shall be denied the opportunity to obtain or retain employment because of non-membership in a labor organization and forbids anyone to enter into an agreement to do so does not deny employers, labor unions or members of labor unions freedom of speech, assembly or petition, or impair the obligation of their contracts, or deprive