In Dredd Scott, the Supreme Court had a very particular issue to consider: that of whether or not an African American had standing to sue in federal court.
The Supreme Court ultimately decided that while Scott was a citizen of a free state, he was not a US citizen and was not entitled to standing as a US citizen.
Under Article C)VI of the Constitution, the laws of Congress and all treaties are the law of the land. This article is seen as stating that all the laws of Congress and all treaties are supreme law. It equally forbids a religious test as requirement for holding a position within the government and holds the United States under the Constitution responsible for debts accumulated by the United States.
Hope this is the right Calderon your talking about lol.
Calderón served as National President of the party, Federal Deputy, and Secretary of Energy in Vicente Fox's cabinet. He served in the cabinet of the previous administration until he resigned to run for the presidency and secured his party's nomination.