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. Unlike a customs union, parties to a free trade agreement do not hold common external tariffs, i.e. different tariffs, or other policies concerning non-members. This function allows non-parties to free themselves as part of a free trade agreement by entering the market with the lowest external tariffs. Such a risk requires the introduction of rules for determining which products originate may be preferred under a free trade agreement, which is not necessary for the establishment of a customs union.  In principle, there is a minimum processing time leading to a „substantial processing” of the products, so they can be considered original products. By the definition of products originating in the PTA, the preferential rules of origin distinguish between domestic and non-origin products: only the former are eligible for preferential tariffs provided by the ESTV, which must pay the import duties of the MFN.  They all had a lot to say about protection and free trade, and we discovered that Henry George had been among them. The European Union is now a remarkable example of free trade. Member States form an essentially borderless unit for trade purposes, and the introduction of the euro by most of these countries paves the way. It should be noted that this system is governed by a Brussels-based bureaucracy, which has to deal with the many trade-related issues that arise between the representatives of the Member States. Unsurprisingly, financial markets see the other side of the coin. Free trade is an opportunity to open up another part of the world to local producers.
Few issues divide economists and the scope of public opinion as much as free trade. Studies show that economists at U.S. university faculties are seven times more likely to support a free trade policy than the general public. In fact, the American economist Milton Friedman said: „The economic profession was almost unanimous on the question of the desire for free trade.” The General Agreement on Tariffs and Trade (GATT 1994) originally defined free trade agreements that were to include only trade in goods.  An agreement with a similar purpose, namely the improvement of trade in services, is referred to as the „economic integration agreement” in Article V of the General Agreement on Trade in Services (GATS).  However, in practice, the term is now commonly used [by whom?] to refer to agreements that concern not only goods, but also services and even investments.