Democrats to Stress Environmental Issues

WASHINGTON - Three Democratic senators poised to head committees grappling with global warming pressed President Bush on Wednesday for mandatory U.S. limits on greenhouse gases.

In a letter to Bush, Sens. Barbara Boxer of California, Jeff Bingaman of New Mexico and Joe Lieberman of Connecticut said voters in the election last week demanded that the government reduce the nation's heat-trapping greenhouse gases that are contributing to the Earth's warming.

"The recent elections have signaled a need to change direction in many areas, including global warming," the senators wrote.

Boxer, Bingaman and Lieberman will, respectively, head the Senate's environment, energy …