The judicial branch can declare laws unconstitutional. This is an important power that helps to ensure that no one branch of the government has too much power. The Constitution of the United States divides the federal government into three branches: legislative, executive, and judicial. The legislative branch makes laws, the executive branch enforces laws, and the judicial branch interprets laws and ensures that they are constitutional. The system of checks and balances was created to make sure that no one branch would be able to control too much power, and it created a separation of powers.