Together, these agreements mean that about half of all goods entering the United States enter duty-free, according to the government. The average import duty on industrial products is 2%. Reciprocity is a necessary feature of any agreement. If each required party does not win by the agreement as a whole, there is no incentive to approve it. If an agreement is reached, it can be assumed that each contracting party expects to win at least as much as it loses. For example, Country A, in exchange for removing barriers to country B products, which benefit A consumers and B producers, will insist that Country B reduce barriers to country A products and thus benefit country A producers and perhaps B consumers. Trade pacts are often politically controversial because they can change economic practices and deepen interdependence with trading partners. Improving efficiency through “free trade” is a common goal. Most governments support other trade agreements.
The logic of formal trade agreements is that they reduce penalties for deviation from the rules set out in the agreement.  As a result, trade agreements make misunderstandings less likely and create confidence on both sides in the sanction of fraud; this increases the likelihood of long-term cooperation.  An international organization such as the IMF can further encourage cooperation by monitoring compliance with agreements and reporting violations.  It may be necessary to monitor international agencies to detect non-tariff barriers that are disguised attempts to create barriers to trade.  The agreement reflects the World Organization for Animal Health`s (OIE) negligible risk classification for bovine spongiform encephalopathy (BSE) in the United States. In October 2014, the United States and Brazil ended a long-running dispute over cotton in the World Trade Organization (WTO). Brazil terminated the case and waived its right to counter-measures against U.S. trade or any other litigation.
Free trade allows the total import and export of goods and services between two or more countries. Trade agreements are forged to reduce or eliminate import or export quotas. These help participating countries to act competitively. A clause relating to the “government treatment of non-tariff restrictions” is necessary, as most tariff characteristics can easily be duplicated by a set of non-tariff restrictions, designed accordingly. These include discriminatory rules, selective excise or sales taxes, specific health requirements, quotas, “voluntary” import restrictions, specific licensing requirements, etc., not to mention general prohibitions.