Which entity is responsible for reviewing laws for their constitutionality?

The entity responsible for reviewing laws for their constitutionality is the Supreme Court. This function is a key aspect of the judicial branch of government in the United States, ensuring that all laws and executive actions align with the Constitution. The Supreme Court has the authority to interpret the Constitution and determine whether legislative or executive acts violate constitutional provisions. This process is known as judicial review, which was established in the landmark case Marbury v. Madison in 1803. Through this power, the Supreme Court acts as a check on the legislative and executive branches, safeguarding the principles of the Constitution and protecting individual rights against potential government overreach.

The other entities mentioned each have distinct roles within the government. Congress is primarily responsible for creating laws, while the President is responsible for enforcing them. The Cabinet, comprised of the heads of executive departments, advises the President and helps implement policies but does not engage in constitutional review.