Which amendment addresses the issue when states sue other states?

The Eleventh Amendment specifically addresses the issue of lawsuits brought by one state against another state within the United States. Ratified in 1795, this amendment establishes that states cannot be sued in federal court by citizens of another state or by foreign entities. This provision is rooted in the principle of state sovereignty, intending to protect states from being compelled to defend themselves against legal actions initiated by individuals and other states.

The Tenth Amendment deals with the distribution of power between the federal government and the states, asserting that any powers not delegated to the federal government are reserved for the states. The Twelfth Amendment pertains to the presidential election process and the procedures for electing the President and Vice President. The Ninth Amendment emphasizes that the enumeration of certain rights in the Constitution does not mean that individuals do not hold other rights not specifically mentioned.

By understanding the focus of the Eleventh Amendment, it becomes clear why it is the correct answer when discussing legal actions between states.