The substance of a state interventionism involves an active policy influencing economic processes. In the United States of America this kind of policy is described as a New Deal and was introduced during F. D. Roosevelt's presidency. The New Deal's policy was focused on resolving basic socio- economic problems that were recognized as main causes of the economic crisis. Legal acts became a key to success initiation of which made a contribution to a significant reduction in the crisis effects. Law reconstruction and standardization related, among other things, to the performance of financial system, farming section, industry, and social policy.