Recent activity by the Obama administration points to the possibility of a breakthrough in the ongoing cross-border trucking dispute between Mexico and the United States.  Following his two-day visit to Mexico on February 8 and 9, United States Trade Representative (USTR) Ron Kirk had optimistic predictions for the settlement of the dispute.  In an interview with Reuters, the Representative noted that President Obama had successfully persuaded Congress to remove a clause in the 2010 appropriations bill that had effectively prohibited the movement of Mexican transport trucks into the United Sta