The supreme court would have original jurisdiction in

The Supreme Court would have "original jurisdiction" in judicial matters against public ministers and ambassadors, judicial matters between one state and a foreign government, and in judicial matters between two or more states.

The Supreme Court serves as the peak of the judicial system of the country. Matters concerning two or more states can only be heard by the Supreme Court as the high courts of the respective states cannot pass judgments against each other.

Moreover, the Constitution only allows the Supreme Court to decide on judicial matters filed against ministers and diplomats.

answer; curiosity;

answer; sutherland-differential association;