The recent ruling by the U.S. Court of Appeals in Washington that the Environmental Protection Agency must promulgate its air-quality regulations based on science and legislative intent is an amazing reversal of fortune for one of the most out-of-control of all federal bureaucracies.
The ruling is also a clarion call for Congress to shoulder its constitutional duty to write laws with clear intent, rather than pass the buck to unaccountable, often overzealous regulatory bodies.
Here's the background:
When Congress amended the federal Clean Air Act in 1990, it authorized the EPA to create regulations that would meet the requirements set forth in the act.
However, the act never specifies in any meaningful way what, exactly, constitutes ''clean air'' or ''healthful'' environmental conditions; instead, there are vague platitudes about ''protecting the public health'' with ''an adequate margin of safety.''
Thus the EPA was effectively given carte blanche to make up its own definitions and standards - which is exactly what the agency did.
Last July, EPA unilaterally lowered its definition of permissible levels of airborne particulate matter (soot) and ground level ozone, changing overnight the threshold at which localities would be found ''out of compliance'' with air quality standards.
At the stroke of a pen, hundreds of areas all over the country that had been considered perfectly ''clean'' under the old standards were transformed into fetid sinks of putrefaction - and thus subject to strict new emissions controls on automobiles, industry and business that could cost at least $ 60 billion annually, according to the president's own Council of Economic Advisors.
Private estimates put the actual cost much higher. Economists at George Mason University's Center for the Study of Public Choice put the tab at a stupendous $ 380 billion per year.
Problem is, none of what EPA trotted out last summer was based on any kind of scientific rationale -which is precisely why the court rightly rebuked the agency. In its endless quest for the chimera of test-tube pure air - something that has never existed in the real world - EPA simply lowered its officially tolerable standard for ground level ozone from 0.12 parts per million (ppm) to 0.08 ppm and unilaterally decreed a reduction in the ''acceptable'' size of soot particles to 2.5 microns, or 28 times smaller than the width of a human hair.
EPA touted the benefits to severe asthmatics, the elderly and others with respiratory problems. But this is all theory and has never been proved.
What's more, the agency never showed how a $ 60 billion to $ 380 billion a year tab would provide any kind of return.
The court saw beyond the EPA's bureaucratic fiat and sent it a message. It wisely ruled the agency was out of line and ordered it to go back to the drawing board. The next time EPA wants to lower permissible standards for pollutants, it must provide a factual basis for doing so.
The idea of requiring federal agencies to demonstrate provable, objective benefits before they go off half-cocked in their zeal to protect us from phantom menaces with all- too-real price tags is certainly appealing.
But for this to become a reality, Congress must reassert its legislative prerogatives.
While the court did not challenge the right of federal agencies to issue regulations, it did note that what EPA did in this case was ''arbitrary and capricious,'' and amounted to an ''unconstitutional delegation of legislative power,'' according to the 2-1 majority opinion.
In other words, EPA had exceeded its statutory authority in promulgating the new standards because it was effectively legislating - a power, you'll recall, explicitly reserved to Congress under the Constitution.
Whether this decision will rein in the EPA remains to be seen. The only guaranteed way to stop rule by bureaucracy is to bring back the rule of law. Only Congress can do that. If our elected representatives don't find the courage, then maybe we should recognize the power of the bureaucrat -and dispense with the dog-and-pony show on Capitol Hill.
Eric Peters is a Washington, D.C.-based automotive columnist.
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