In Italy, the government's power is limited by the Constitution of the Italian Republic, which outlines the fundamental principles of the government, including the separation of powers among the executive, legislative, and judicial branches. The legislative power is vested in the Italian Parliament, which is composed of the Chamber of Deputies and the Senate. The President of Italy, who is the head of state, appoints the Prime Minister, who is the head of government. The judiciary branch is independent and ensures the enforcement of the country's laws.