What ensures the Constitution and its rules are not being ignored by the president Congress or the states?

The Constitution is upheld through a system of checks and balances among the three branches of government: the executive, legislative, and judicial. Each branch has distinct powers and responsibilities, allowing them to monitor and limit each other's authority. Additionally, the judiciary, particularly the Supreme Court, has the power to interpret the Constitution and can strike down laws or executive actions that violate constitutional principles. This framework helps ensure that no single branch or level of government can ignore or override the Constitution.