What is the primary role of the US Supreme Court?

The primary role of the US Supreme Court is to serve as the court of last resort. This means that it has the final authority on legal interpretations and constitutional issues within the United States. The Supreme Court reviews cases that have significant legal implications, often involving conflicts in lower court decisions or substantial questions regarding the Constitution. By serving this role, the Court ensures that there is a uniform interpretation and application of federal law across the nation, which is critically important for maintaining the rule of law and protecting individual rights. Its decisions can set precedents that influence future court rulings, thereby shaping the legal landscape of the country.

The other roles mentioned, such as legislating new laws or conducting criminal trials, do not fall under the Supreme Court's jurisdiction. The legislative function is reserved for Congress, while conducting trials is primarily the responsibility of lower courts. Additionally, while the Supreme Court may review cases from state courts, it does not oversee them in a supervisory capacity, which distinguishes its unique position as the highest court in the judicial system.