A U.S. government agency has begun a new audit to determine if the Bush administration has resolved inspection issues that would allow Mexican trucks to enter the U.S. freely...Since before the passage of NAFTA, a decision to allow Mexican trucks into the U.S. on a non-restricted basis has been hotly contested. On June 7, 2004, the U.S. Supreme Court reached a unanimous decision in Department of Transportation v. Public Citizen, ruling that Mexican trucks under NAFTA could enter the U.S. freely, even if the Mexican trucks failed to meet environmental standards as set by state and federal law. The decision...