- Where Constitutional law is at issue.
- Where Federal law is at issue.
- Where a treaty is involved.
- Where an ambassador is involved.
- Where the case took place on the sea.
- When the United States (or any state of the US) is sued or being sued.
- When two states are suing each other.
- When diversity jurisdiction exists.
An example of Supreme Court is the court that made the final decision on Roe v. Wade in 1973.