Presidential directive is a written or oral official instruction on a federal policy which is issued by the President.
Executive order is a type of presidential directive that manages and handles operations of federal government and includes implementing a specific law. Executive orders direct federal employees to take a particular action or implement a policy in a certain way. Executive orders are dependent uponjudicial review and can be revoked if the orders lack approval by the constitution. They have an important impact on government internal affairs, they determine to what extent laws will be implemented, deal with emergencies and fine tune policy options in the execution of specific statutes. Once issued, presidential executive orders remain in force until they are cancelled, abrogated, unlawfully judged, or expire on their own terms. The president may revoke, change, or make exceptions from any executive order at any time.
