According to U.S. Trade Representative Ron Kirk, the proposed program which would remove barriers on U.S. exports 
by allowing Mexican carriers access to U.S. roadways could be in effect within four to six months.
In a speech yesterday, Kirk noted that “the U.S. would like to sit down and begin negotiations with Mexico in the next week.” (http://online.wsj.com/article/SB10001424052748703779704576074283804970202.html).
The proposal came after disputes resulting from the termination of the pilot program in 2009, which led to Mexico retaliating through the installation of tariffs on American goods.
The “rotating list of 99 U.S. products in 2009” include “pork, ketchup, and wine” (all goods in which Road Scholar Transport has the capability to safely transport), resulting in over $2 billion a year in tariff costs (http://www.businessweek.com/ap/financialnews/D9KLQBMO1.htm)
According to businessweek.com, Mexico has agreed to “stop rotating the products being taxed” but refuse to remove the tariffs all together.
