First, the parties that signed a free trade area applicable to trade with non-parties to that free trade area at the time of the creation of that free trade area must not be higher or more restrictive than tariffs and other rules applicable in the same signatory countries prior to the creation of the free trade area. In other words, the creation of a free trade area to give preferential treatment to their members is legitimate under WTO law, but parties to a free trade area are not allowed to treat non-parties less favourably than before the creation of the territory. A second requirement under Article XXIV is that tariffs and other trade barriers must be eliminated primarily for all trade within the free trade area.  A free trade agreement is a pact between two or more nations to reduce barriers to trade between imports and exports. Under a free trade policy, goods and services can be bought and sold across international borders without government tariffs, quotas, subsidies or bans. For example, a nation could allow free trade with another nation, with exceptions that prohibit the importation of certain drugs not authorized by its regulators, animals that have not been vaccinated, or processed foods that do not meet their standards. Governments with free trade policies or agreements do not necessarily abandon import and export controls or eliminate all protectionist policies. In modern international trade, few free trade agreements lead to completely free trade. The second way of looking at free trade agreements as public goods is related to the growing trend that they are “deeper”. The depth of a free trade agreement relates to the additional types of structural policies it covers.
While older trade agreements are considered more “flat” because they cover fewer areas (for example. B tariffs and quotas), recent agreements cover a number of other areas, ranging from e-commerce services and data relocation. Since transactions between parties to a free trade agreement are relatively cheaper than those with non-parties, free trade agreements are considered excluded. Now that deep trade agreements will improve the harmonization of legislation and increase trade flows with non-parties, thereby reducing the exclusivity of free trade agreements, next-generation free trade agreements will take on essential characteristics for public goods.  Additional ancillary agreements have been reached to allay concerns about the potential impact of the treaty on the labour market and the environment.