What effect did World War 2 have on the size and power of the US government?

World War II significantly expanded the size and power of the U.S. government as it took on unprecedented roles in economic management, military production, and social welfare. The government implemented measures like the War Mobilization Board, which coordinated industrial production, and introduced programs such as the G.I. Bill to support veterans. This era also led to the establishment of a more permanent military-industrial complex, increasing federal influence in various sectors. Consequently, the war catalyzed the growth of government agencies and set a precedent for future federal involvement in both the economy and society.