The International Brotherhood of Teamsters has expanded its lawsuit against the government in a long-running battle that has stopped Mexican trucks from coming deep into the United States.
In papers filed in federal appeals court in Washington on Wednesday, the union says the government must first assess the environmental impact of a pilot project before letting it continue. The first Mexican truck in the pilot program crossed the border last month.
Teamsters President James P. Hoffa says opening the border to the trucks is an attack on the environment, on highway safety and on American truckers and warehouse workers.
Under the North American Free Trade Agreement signed nearly two decades ago, trucks from both countries were supposed to have unhindered access to highways on either side of the border.