Supreme Court to tackle cross-state pollution

Mark Sherman, reporting for The Associated Press:

The Supreme Court indicated Tuesday it could breathe new life into a federal rule requiring states to reduce power plant pollution from the South and Midwest that fouls the air in the Eastern U.S.

Several justices suggested during a 90-minute argument that they believe the Environmental Protection Agency did not exceed its authority when it issued its cross-state air pollution rule in 2011. A divided federal appeals-court panel invalidated the rule last year.

Shouldn't the Executive Branch be allowed to govern without excessive litigation?