EXICO'S present political stability, economic progress, and balanced leadership provides a climate inhospitable to the growth of communist political parties, front groups, or infiltration elements. The official government party in Mexico, called today the Institutional Revolutionary party (PRI), has effectively controlled the country since the party's founding in 1929. Operated for six years as a political holding company by General and former President Plutarco Elias Calles, the party has become the vehicle for the institutionalization of power in Mexico. The process was begun by Calles' protege and later opponent, President General LJzaro Cardenas. The spectacular social, economic, and educational reforms of Cirdenas have usually overshadowed his more cautious political reforms, but the latter in the long run have proved to be no less important for the currently peaceful, stable, and prosperous condition of the nation. It was Cairdenas, for example, who forced the army first to exercise its political influence within the party framework, and by strengthening civilian elements through their incorporation within the party, forced the military to share their power, particularly with the labor unions and the bureaucracy. Cairdenas also strengthened the precedents of one term in the presidency and abstention from political control from behind the throne. The pattern developed by Cairdenas has been continued and broadened by his successors since 1940. The army has been virtually removed from politics until today its political influence is largely negative. The strength of organized labor has grown moderately; that of the bureaucracy, enormously; while a new political element, despised and almost persecuted prior to 1940, has emerged as a major contender for power --the business community. Commercial and industrial leaders and their organizations have not gained corporate status within the official party as is enjoyed by labor, farm groups, and the bureaucracy, but through their various Chambers of Industry and Commerce that have direct contacts with government and party leaders, they exercise at times preponderant influence in policy. Although Mexican orientation has not abandoned the revolutionary ideal of dividing and redividing the cake, emphasis today is more strongly placed on the goal of producing a bigger cake to divide. Politically,