An executive order is a directive issued by the President of the United States to manage the operations of the federal government. It has the force of law but does not require congressional approval. Typically, executive orders are used to create regulations, direct federal agencies, and implement existing laws. They can have significant implications for policy changes and are often subject to judicial review. This mechanism allows the president to respond quickly to issues, but it can also lead to controversies regarding the balance of power between branches of government.