MEXICAN TRUCK CASE INCREASES STATES' MOBILE SOURCE CONTROL DUTIES

The Supreme Court's recent decision allowing Mexican trucks on U.S. roads could significantly increase motor vehicle emissions that states are required to limit, by making potentially sweeping changes to Clean Air Act transportation requirements that previously held both federal and state agencies responsible for the emissions, according to legal experts, states and environmentalists. The case has major implications for what are known as "conformity" requirements under the statute, which direct states to ensure that transportation emissions do not conflict with...