Changes

The Compact Clause in the U.S. Constitution requires approval by Congress of any agreement among states to increase their power at the expense of federal power.  A comparable prohibition had been in the Articles of Confederation, but the Framers chose even stronger language for the U.S. Constitution:

The '''Compact Clause''' in the U.S. Constitution requires approval by Congress of any agreement among states to increase their power at the expense of federal power.  A comparable prohibition had been in the Articles of Confederation, but the Framers chose even stronger language for the U.S. Constitution:

"No State shall, without the Consent of Congress ... enter into any Agreement or Compact with another State, or with a foreign Power, or engage in War, unless actually invaded, or in such iminent Danger as will not admit of delay."  (Article I, Section 10, Clause 3)

"No State shall, without the Consent of Congress ... enter into any Agreement or Compact with another State, or with a foreign Power, or engage in War, unless actually invaded, or in such iminent Danger as will not admit of delay."  (Article I, Section 10, Clause 3)