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Keystone XL Pipeline
Stick to fuel economy targets
Stick to fuel economy targets

In Detroit, the talk at the annual North American International Auto Show last week was how falling gasoline prices have spurred the public's appetite for bigger vehicles. The not-so-well concealed subtext was this: a desire by auto executives to see a delay or softening of federal fuel efficiency standards that require substantial upgrades to the gas mileage of cars sold in America in the years ahead. That anyone connected with automobile manufacturing would suggest that U.S. standards for fuel efficiency — formally known as corporate average fuel economy, or CAFE — should be relaxed is not exactly surprising. Bigger trucks and sport utility vehicles are a major...