U.S. and Mexican authorities signed an agreement regarding cross-border trucking in July. In the 1994 North American Free Trade Agreement (NAFTA), the United States and Mexico had agreed to ease restrictions on the cross-border movement of trucks so as to enable point-to-point truck cargo service from one country into the other. However, the United States had delayed implementation, citing safety concerns. A 2001 ruling by an adjudicatory panel set up under the NAFTA allowed Mexico to retaliate against the United States for the delay, but Mexico did not take action until 2009 when it imposed stiff tariffs on $2.3 billion worth of U.S. imported goods. With the July agreement, Mexico's retaliatory tariffs were halved and ultimately will be eliminated. Business leaders hailed the deal, although there are detractors in Congress, citing the need to establish and fund a driver safety and certification program to accompany the agreement.