The role of the Supreme Court in the United States government includes interpreting the Constitution and adjudicating legal disputes. It serves as the highest judicial authority, ensuring that laws align with constitutional principles. Through judicial review, the Court can invalidate legislation or executive actions that violate constitutional rights, thereby acting as a key check on governmental power. The Supreme Court's decisions set legal precedents that influence the interpretation of laws and the protection of individual rights, playing a crucial role in maintaining the rule of law and democratic values.