Which body interprets the Constitution and reviews laws to ensure they comply with it?

The Supreme Court is the body tasked with interpreting the Constitution and reviewing laws to ensure compliance with it. This power is granted through judicial review, a principle established in the landmark case of Marbury v. Madison in 1803. The Supreme Court examines the application of laws and can identify those that violate constitutional provisions, thereby ensuring that all legislative and executive actions adhere to the framework established by the Constitution. This critical role helps maintain the rule of law and protects individual rights against potential governmental overreach.

In contrast, the President is responsible for enforcing laws but does not have the authority to interpret the Constitution. Congress's role is to create laws, while the Cabinet assists the President in executing government functions, neither of which includes constitutional interpretation or law review.