The Ninth Circuit Court of San Francisco said the U.S. Dept. of Transportation (DOT) must prepare a full Environmental Impact Statement and Clean Air Act conformity determination before it can open the U.S.-Mexican border.

In its ruling, the court found DOT "acted arbitrarily and capriciously" by failing to prepare a full Environmental Impact Statement.

"In a rush to open the border, the administration failed to pay attention to the health concerns of U.S. citizens," said International Brotherhood of Teamsters general president James Hoffa. "We are pleased that the court recognized the inherent dangers of the department's policy and is enforcing our nation's laws."

A lawsuit designed to stop Mexican trucks was brought by a coalition of interest groups, including the Teamsters.