The Bush administration announced on May 29 that it would uphold a Clinton administration regulation reducing air pollutants from older power plants and industrial facilities that cause excessive smog in national parks.

The Bush administration announced on April 18 that it would retain a Clinton administration regulation imposing tougher lead emission reporting requirements for industrial facilities.

In a unanimous decision issued on February 27, the Supreme Court upheld authority delegated to the Environmental Protection Agency by the 1970 Clean Air Act to set strict clean air standards for soot and ground level ozone without regard to economic cost.