Administrative law in the United States refers to the body of law that governs the activities of administrative agencies of the federal and state governments. These agencies are created by Congress or the state legislature to carry out specific functions, such as enforcing regulations, conducting investigations, or making decisions that affect the rights and obligations of individuals and organizations. Administrative law includes the procedures used by these agencies to make and enforce regulations, as well as the legal rights and remedies available to individuals and organizations affected by agency actions.