Required Reading for Congressman

After reading an article about the Justices going in front of Congress for the budget hearings, I saw something that somewhat confused me. Here is the article. It seems that Todd Tiahrt, a republican representative from Kansas, should have read his copy of the Constitution. He probably would have avoided making this statement: "Tiahrt, the only panel member who criticized rulings by the high court, said he was concerned that the court has cited international law in rulings. "Lately we've had rulings that seem to go beyond the rule of law," he said, referring particularly to a decision last month that struck down the death penalty for those who committed their crimes as juveniles." I remember reading something in 8th Grade, about any International Treaties (International Law) we sign, supercede any Federal Laws. Article VI Clause 2: This Constitution, and the Laws of the United States which shall be made in Pursuance thereof; and all Treaties made, or which shall be made, under the Authority of the United States, shall be the supreme Law of the Land; and the Judges in every State shall be bound thereby, any Thing in the Constitution or Laws of any State to the Contrary notwithstanding. (emphasis added)