The Sierra Club, with over 700,000 members nationwide, is the oldest grassroots environmental organization in the United States. It sees its purpose as preservation, protection, and enhancement of the natural environment.
Article IV, Section 4. This section is called the Guarantee Clause, because by its terms the federal government makes certain guarantees to the states. One of theseâprotection from foreign invasionâcontinued Congress's prior obligation under the Articles of Confederation.
Article IV of the United States Constitution begins with the self-executing command, âFull Faith and Credit shall be given in each State to the public Acts, Records, and judicial Proceedings of every other State.â U.S. Const. art. IV, Â§ 1.