Checks and Balances in Action

In the American political system, checks and balances are essential to maintaining the separation of powers among the three branches of government: the legislative, executive, and judicial branches. These mechanisms ensure that no single branch becomes too powerful. Consider the following situation: the President has signed a bill into law, but the Supreme Court believes that the law is unconstitutional. Which of the following actions best exemplifies the system of checks and balances in this scenario?