The second way in which free trade agreements are seen as public goods is related to the changing trend towards them becoming "deeper". The depth of a free trade agreement concerns the additional types of structural policies it covers. While older trade agreements are considered "flat" because they cover fewer areas (such as tariffs and quotas), recently concluded agreements deal with a number of other areas, from services to e-commerce to data localization. Since transactions between parties to a free trade agreement are relatively less onerous than transactions with non-parties, free trade agreements are generally considered to be excluded. Now that deep trade agreements will improve regulatory harmonization and increase trade flows with non-parties, thereby reducing the applicability of the benefits of the FTA, next-generation free trade agreements retain essential features of public goods.  As expected, the USMCA was signed by all three sides at the G20 summit in Buenos Aires on November 30, 2018.   Disputes over labour rights, steel and aluminum prevented the ratification of this version of the agreement.   On December 10, 2019, Canada`s Deputy Prime Minister Chrystia Freeland, U.S. Trade Representative Robert Lightizer, and Mexican Under Secretary of State for North America Jesus Seade formally signed a revised agreement, ratified by all three countries on March 13, 2020. In order to increase cross-border trade, the United States has entered into an agreement with Mexico and Canada to increase their de minimis shipping value.
For the first time in decades, Canada will increase from C$20 ($15.38) to C$40 ($30.77) for taxes. Canada also provides duty-free shipments of up to C$150 ($115.38). Mexico will continue to provide $50 tax-free de minimis and will also offer duty-free shipments worth $117. Dissemination values up to these levels would occur with a minimum of formal entry procedures, making it easier for more businesses, especially small and medium-sized enterprises, to be part of cross-border trade. Canada will also allow the importer to pay taxes 90 days after entry.