Why do countries erect trade barriers that inhibit imports and exports

To protect their local markets and keep a health balance of payments.

Explanation:

They inhibit imports as those require forex and may hurt their own country's production and markets. They inhibit exports at times to prevent shortages of goods they require such as wheat when there is a drought or increases local demand.

answer; /// i believe its(c) policymakers prioritize the various problems facing the state;

the supreme court plays a big role in government. the constitution gives them ability to check the president and the congresses actions and dictate if their actions are allowed by the constitution or not.

hope this .