From this:

...During a January 28 radio interview, Mexican Foreign Secretary Luis Ernesto Derbez has threatened the State of Arizona with legal action through the international courts in order to overturn Proposition 200, a ballot initiative lawfully passed last fall to curb state expenditures on illegal aliens.

Derbez plans to initially use the "legal capacities" of the United States to achieve his goal. But if that doesn't work, he will resort to the intervention of "international tribunals."

Momentarily sidestepping the absurdity of granting any legal capacity to an international organization regarding strictly internal issues, consider the larger picture of what is actually being attempted, as a foreign power now makes threats against an individual American State.

The Constitution, in its original form, was never designed to put the federal government in charge of regulating minute details in the lives of Americans. Basically, it had two purposes, which were to act as an arbiter between the individual states, and to collectively represent those states in the face of foreign challenges, whether diplomatic or military.

Yet the federal leviathan, which grew monstrously beyond its original boundaries, has become an overwhelming burden of bureaucratic entanglements to the citizenry. Meanwhile the Mexican government, a foreign entity, seeks to intimidate and ultimately dictate the policies of an individual American State...