A tough, new clean air bill is expected to breeze through the House and Senate this week and be signed into law by President Bush.

A House-Senate conference committee approved the legislation with only one dissenting voice on Monday. Democratic and Republican leaders expressed confidence the measure will clear Congress, probably Wednesday.The legislation, which is expected to cost the economy more than $22 billion a year when all its provisions are in force, requires new pollution controls on factories, thousands of businesses, automobiles and electric power plants.

Bush noted that it has been 13 years since federal air pollution laws were revised and said, "This Congress, this week, should send me a clean air bill that I can sign." White House sources said there did not appear to be anything in the measure that would keep the president from signing it.