Refers to the power of the United States Congress to monitor and, if necessary, change the actions of the executive branch, including the many federal agencies. The primary goals of congressional oversight are to prevent waste, fraud, and abuse, and to protect civil liberties and individual rights by ensuring that the executive branch complies with the laws and the Constitution. Derived from its "implied" powers in the U.S. Constitution, public laws, and House and Senate rules, this is one of the key elements of the American system of checks and balances of power.