When states cannot tax imports or exports, they are exercising which type of power?

When states cannot tax imports or exports, they are exercising prohibited powers. This restriction is rooted in the Constitution, which outlines specific powers granted to the federal government while simultaneously prohibiting certain actions by the states. Such limitations include the ability of states to levy taxes on goods being imported or exported, which helps maintain a uniform and balanced approach to interstate commerce and trade policy.

This prohibition aims to prevent individual states from imposing tariffs or taxes that could disrupt trade between states or with foreign entities, thereby ensuring a more stable economic environment. Thus, the restriction aligns with the constitutional framework designed to regulate commerce effectively at the federal level.

Delegated powers refer to specific powers assigned to the national government, such as the ability to tax and regulate trade, while implied powers are those not explicitly stated but inferred from the Constitution. Full faith and credit pertains to ensuring public acts, records, and judicial proceedings from one state are recognized in others, which is not relevant to this context.