Executive Privilege:The power of the president and high-level executive branch officials to withhold information from Congress, the courts, and the public, based on the separation of powers doctrine.
Judicial Review:The power of the judicial branch to review the actions of the legislative and executive branches and to declare them unconstitutional.
Separation of Powers:The division of government into three branches - legislative, executive, and judicial - with checks and balances to prevent the concentration of power.