Expanded means to increase in size, extent, scope, or importance. In the context of government powers, expanding means giving more authority or jurisdiction to the federal government in specific areas.
Related terms
Broadened: Broadening refers to making something wider or more extensive. In this case, it would mean increasing the scope of federal government powers.
Enhanced: Enhancing means improving or strengthening something. When the powers of the federal government are enhanced, they are made stronger or more effective.
Amplified: Amplifying means increasing in intensity or volume. If we amplify the powers of the federal government over commerce, we give them greater control and influence in regulating commercial activities.