A contract is an official and explicit written agreement that states use to engage legally.  A treaty is an official document that expresses agreement in words; It is also the objective result of a solemn event that recognizes the parties and their defined relationships. The publication of a contract does not require academic accreditation or interdisciplinary background knowledge. The separation between the two is often unclear and is often politicized in disagreements within a government over a treaty, because a treaty cannot be implemented without a proper change in national legislation. When a treaty requires laws of application, a state may be late in its obligations if its legislator does not pass the necessary national laws. Many civil society organizations are calling for the abolition of the WTO, with its intrusive rules that promote trade over national health and social policies. Others argue that it should “decrease or decrease”, reduce its scope for trade in goods and customs barriers, and leave services, investments and non-tariff barriers (national policies and regulations) outside liberalisation agreements. Still others fear that if the economies of large developing countries develop and the majority of WTO members in developing countries organize more effectively to negotiate their interests, the organization will be abandoned by more prosperous countries whose own interests can be better served by bilateral or regional trade negotiations. In the absence of certain multilateral trade rules, there is a concern that economic power will inevitably be overshadowed by development. A treaty is a formal and binding written agreement that is concluded by actors in international law, usually sovereign states and international organizations, but may involve individuals and other actors.
 A treaty can also be described as an international agreement, protocol, treaty, convention, pact or exchange of letters. Regardless of terminology, only instruments that are binding on the parties are considered treaties of international law.  A treaty is binding under international law. The United States and Peru have agreed to make changes to certification declarations that consider U.S. federally controlled beef and beef products from U.S. companies that may be exported to Peru, instead of beef and beef products from companies participating in the USDA Agricultural Marketing Service`s (AMS) EXPORT Verification (EV) programs in accordance with previous certification requirements. The first part of this glossary introduced various arguments on health and trade, gave an overview of the history of the World Trade Organization (WTO), defined the main conditions of “trade negotiations” and examined three WTO treaties on trade in goods (GATT 1994, the Agriculture Agreement and the Agreement on Health and Plant Health Measures). In the second part, five other agreements and the growing number of bilateral and regional trade agreements are discussed and concluded by commenting on various proposed strategies to ensure that health is not affected by trade liberalization agreements. The distinctions are mainly related to their method of authorisation. Contracts must be advised and approved by two-thirds of the senators present, but executive agreements alone can be executed by the President.