In 1939, there was a movement to unify the liberal and the labor party members, dissidents of the Socialist Party. These movement caused his withdrawal from the Republican Union and his collaboration in the organization of which came to be known as Tripartite Puerto Rican Unification. That same year García Méndez introduced the House Bill 598 creating the Industrial Development Corp. which would promote the economic development of Puerto Rico. The bill was never signed by Gov. Blanton C. Winship. Three years later however, the Industrial Development Co. was created.