Who in the U.S. Congress helped Louis b Mayer pay minimal capital gain taxes on selling his MGM stock?

Louis B. Mayer, the head of MGM, received assistance in minimizing his capital gains taxes primarily through the efforts of Senator John McClellan of Arkansas. McClellan played a significant role in pushing for tax legislation that benefited Mayer and others in the entertainment industry. This involvement exemplified the close ties between Hollywood and political figures at the time, highlighting the influence of lobbying on tax policy.