The Constitutional Council of France is the highest constitutional authority that ensures the principles and rules of the French constitution are upheld. It rules on whether proposed statutes conform with the constitution before they are signed into law. The Council also supervises elections and declares their results. It has the power to declare laws invalid if they are contrary to the constitution or treaties that France has signed. The Council is made up of former presidents and nine members appointed by the president, National Assembly and Senate for non-renewable nine year terms.