Answer: Executive orders
Step-by-step explanation:
One of the powers that comes with being the Head of the Executive branch of government is the power to issue Executive orders. Executive orders are binding to the officers and agencies under the Executive branch as they are under the President.
Executive orders are to be treated as legislation with the full weight of the law. They are still subject to Judicial Review however, to ensure that the President is not issuing orders that contravene the Constitution.