who gets to decide how many federal courts we have

The decision on how many federal courts we have is made by the United States Congress. According to Article III of the U.S. Constitution, while there must be one Supreme Court, Congress has the authority to create and organize inferior federal courts, including determining the number and location of these courts. Congress controls the number of federal district courts and circuit courts of appeal, and decides the organization of these courts through legislation. This authority is also exercised through acts like the Judiciary Act of 1789. In addition, Congress appoints the judges to these courts by confirming the President's nominees and controls the judiciary's budget.