Executive Order: Executive Order refers to a directive issued by the President of the United States that manages operations of the federal government. It has the force of law but does not require approval from Congress.
Treaty: A treaty is an agreement between two or more countries that is negotiated and ratified by their respective governments. Treaties often cover issues related to peace, trade, or territorial boundaries.
Amendment: An amendment refers to a change or addition made to the United States Constitution. Amendments are proposed and must be ratified before becoming part of the Constitution.