What is this law that originally comprised seven articles that entrench the doctrine of the separation of powers in the United States, whose clause was reaffirmed by the decision from Lambert v. Yellowley?
Lambert v. Yellowley:  The decision affirmed the police powers of the individual states, as well as the power of the Necessary and Proper Clause of the United States Constitution, which was cited in upholding the Prohibition Act's limitations as a necessary and proper implementation of the Eighteenth Amendment to the United States Constitution. United States Constitution:  The Constitution, originally comprising seven articles, delineates the national frame of government. United States Constitution:  Its first three articles entrench the doctrine of the separation of powers, whereby the federal government is divided into three branches: the legislative, consisting of the bicameral Congress; the executive, consisting of the President; and the judicial, consisting of the Supreme Court and other federal courts.
United States Constitution