Congress retains the authority to do this. They also have the authority to abolish any federal court except the Supreme Court.
The final authority in the federal system is the Supreme Court.
Article III of the US Constitution mandated that Congress establish a Supreme Court and gave it authority to create any other federal courts it deemed necessary. This was accomplished with the Judiciary Act of 1789.
judinal
Supreme Court
to establish a federal court system
The Judicial Branch
Congress (Legislative Branch) is vested with the authority to establish "inferior courts" and to organize the federal court system under Articles I and III of the Constitution.
Congress.
state sees more court case ,where as the federal court doesn't see as many cases
The act that created a court system and divided authority between the state and federal courts is called the Judiciary Act of 1789.
The Federal Judiciary Act
it acts as the final authority on the constitutionally of state and Federal Laws