Medellin is a Mexican national on death row in Texas. The Mexican government wasn't informed when he was arrested and faced a hearing. The U.S. government ratified an international obligation that it would notify governments when their citizens are arrested in the U.S. and that those governments would notify the U.S. when U.S. citizens are arrested in their countries. The U.S. Constitution says that such ratified laws become U.S. law. U.S. Supreme Court Justice Antonin Scalia doesn't like this "I'm rather jealous of that power," Scalia said. "I don't know on what basis we can allow some international court to decide what is the responsibility of this court, which is the meaning of the United States law."
Well, if the U.S. government were to enter into a treaty that attempted to do away with the Bill of Rights, for instance, it would be an unconstitutional treaty. Scalia could throw it out as such. However, notification does not violate the Constitution. When an obligation becomes U.S. law, under the Constitution, Scalia has the duty and right to interpret that law. The U.S. Supreme Court doesn't give that power over to any International Court. It has the right and duty under the mundane law to review the decisions of any International Court to find whether or not the ruling is in line with the U.S. Constitution. His argument is wrong.
Of course, what else concerns him is the death penalty. He is a firm supporter of capital punishment. He thinks it is sanctioned by St. Paul. Of course, it is forbidden by Jesus Christ, but that hasn't deterred Antonin's speech and writings for the death penalty. This is a prime example where traditional Pauline Christianity runs squarely into real Christianity.
Christianity forbids capital punishment. Vengeance is God's. Human beings are not authorized by God to take the lives of other human beings. That authorization is a lie that has entered into humanity's consciousness by the satanic, fallen spirit who serves to kill the consciences of people and hence their souls in hell.
Now, George W. Bush's administration has weighed in saying that Texas must adhere to the International agreement. Here we see Bush siding with International law when it is convenient for him. He's thinking ahead about himself and his cronies of course. He blatantly ignores and twists the meaning of other treaty obligations when he wants to torture even the innocent, and make no mistake about it, holding innocent people in prison is a form of psychological torture, and even physical torture, for the brain is the physical manifestation of spirit for those given to understand that.
Texas in the meantime says that the whole thing is moot, because the outcome of the hearing would have been the same regardless. This is something they are not in a position to determine. The whole point of the treaty is that having benefit of diplomatic and other assistance by one's country of citizenship can impact upon the outcome of such hearings, etc.
Regardless, if everyone would just adhere to the real law that is the New Commandment, all of this would be moot.