Tariffs USMCA Tariff Negotiations Economic Impact Economic Sanctions Tariff Implications Tariff Policies Economic Cooperation Tariff Responses Tariff Retaliation Retaliatory Tariffs Tariff Disputes Energy Trade Economic Policy NAFTA CUSMA Economic Policies NAFTA/USMCA Border Security Tariff Impacts Economic Alliances Drug Trafficking Exemptions from Tariffs Transportation Policy Tariff Effects Canada-U.S.-Mexico Agreement Free Trade Agreements Energy Dependence Import Policies Energy Cooperation Keystone XL Pipeline Import-Export Dynamics Diplomatic Efforts Border Reinforcement Tariff Exemptions Tariffs Impact G7 and G20 Cooperation U.S.-Mexico-Canada Agreement North American Free Trade Agreement Fentanyl Trafficking United States-Mexico-Canada Agreement Diplomatic Relations Protectionism