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.
The Privileges and Immunities Clause. Article 4, section 2, states Citizens of each State shall be entitled to all privileges and Immunities of citizens in the several states.. This prevents a state from imposing unreasonable burdens on citizens of another state.