MEXICO CITY (AP) — U.S. and Mexican officials signed an agreement Wednesday allowing each country's trucks to traverse the other's highways, implementing a key provision of the North American Free Trade Agreement after nearly two decades of bickering. Transportation secretaries Ray LaHood and Dionisio Perez-Jacome signed the three-year memorandum, which is based on an agreement announced in March by Presidents Barack Obama and Felipe Calderon. NAFTA, signed in 1994, had called for Mexican trucks to have unrestricted access to highways in border states by 1995 and full access to all U.S. highways by January 2000. Canadian trucks have no limits...
