What type of power prohibits states from taxing interstate commerce?

The type of power that prohibits states from taxing interstate commerce is classified as prohibited powers. This category specifically includes powers that are denied to state governments to maintain a uniform and regulated commerce across state lines, ensuring that no single state can impose its own tax on goods and services moving between states.

The U.S. Constitution grants Congress the authority to regulate interstate commerce, which means it is essential for the federal government to maintain control over this area to prevent economic barriers created by individual states. Allowing states to impose taxes or regulations on interstate commerce could lead to conflicts and inefficiencies, undermining the national economy.

Delegated powers refer to those specifically assigned to the federal government by the Constitution, while reserved powers are those that are kept by the states. Concurrent powers are those shared by both the federal and state governments, such as the power to tax. Each of these categories has its own distinct roles and limitations within the framework of government, emphasizing why prohibited powers are critical for preventing states from affecting interstate commerce negatively.