Who can declare laws unconstitutional?

The Supreme Court has the authority to declare laws unconstitutional. This power is derived from judicial review, which allows the Court to assess whether laws and government actions are in alignment with the Constitution. This process ensures that any law or act that violates constitutional principles can be nullified, thus upholding the rule of law and protecting individual rights.

The role of the Supreme Court is crucial in maintaining checks and balances among the branches of government, as it acts as a safeguard against legislative and executive overreach. The Court's ability to interpret the Constitution is foundational to the American legal system, enabling it to resolve disputes regarding the application of the law and the Constitution itself.

In contrast, the other options— the President, the Senate, and the House of Representatives— do not have the constitutional authority to declare laws unconstitutional. These branches can create and enact laws, but the interpretation and ultimate judgment regarding those laws rest solely with the judiciary, specifically the Supreme Court.