CNN Lou Dobbs - video:Buckle Up - Mexican Trucks to Use American Highways The Department of Transportation will begin a year-long pilot program that allows hundreds of Mexican truck drivers to travel anywhere in the United States to deliver goods. Right now they're limited to within 25 miles of the border. But some congressional lawmakers say it will lead to a gaping hole in the nation's safety and security system. The Transportation Department says the Mexican drivers will meet U.S. safety requirements and on-site audits will be performed. Despite reassurances, critics say the U.S. government is opening the country to increased drug traffic. Sen. Patty Murray (D-WA) said: "In our new post- 9/11 world, we have learned a lot more about terrorist threats and how to prevent them. We've also learned a lot more about illegal immigration and the methods used to smuggle citizens into the United States." There are safety concerns as well. U.S. drivers have to pass rigorous testing to be licensed in the United States. The bar is much lower for Mexican drivers.