What power is shared between the federal and state governments?

The power to establish courts is shared between the federal and state governments because both levels of government have their own judicial systems. The U.S. Constitution provides for a federal court system, which includes the Supreme Court and lower federal courts, while each state also has its own court system that handles state-level legal matters. This dual court system allows both federal and state governments to interpret and enforce laws, addressing different types of cases and legal issues within their respective jurisdictions.

The other powers mentioned are not shared. For example, declaring war is a power that belongs solely to the federal government, as outlined in the Constitution. Similarly, printing money is exclusively a federal responsibility managed by the U.S. Department of the Treasury and the Federal Reserve System. Lastly, regulating immigration is also a federal power, giving the central government authority over immigration laws and policies.