The federal government's power increased a great deal during this period. During the Progressive Era, the federal government became a consumer advocate with the Sherman Anti-Trust Act and the Food and Drug Administration. Government also got into the electricity business with the Tennessee Valley Authority during the New Deal. Government...
tried to protect people from themselves through the Prohibition movement. While this failed largely due to inadequate government funding and public disinterest, the Prohibition movement lay the groundwork for anti-drug laws today.
The national government also made the American public more aware of the need to defend itself against hostile agents both at home and abroad. The government also had the power to arrest and deport those that it deemed hostile during WWI and the Red Scare of the 1920s. In 1917, the federal government also had the power to draft someone into the military. The draft would come back again in 1940 as part of the preparedness movement for WWII.
Fiscally, the government changed a great deal, too. Starting in 1913, the government could levy an income tax. Right after the Civil War the government started giving out pensions for veterans. As part of Franklin Roosevelt's New Deal, the government also gave out pensions in the form of Social Security. This made people more aware of the federal government's role in their lives.