1.   Bush criticized the protocol for threatening the US economy and for not requiring emission reductions from developing countries like China.

2.   But both sides have submitted plans to balance the budget in seven years, which requires massive reductions in spending, and the probable effects are becoming clear.

3.   But other researchers said it was still unclear whether recovery would indeed require further reductions in emissions or simply more time, or both.

4.   But the law required reductions of nitrous oxide, not acid rain.

5.   But the new plan would not require reductions in NATO forces or dramatically alter the military balance on the European continent, American officials said.

6.   But the U.S. Senate has not yet agreed to that treaty provision, which could require deep reductions in U.S. consumption of fossil fuels.

7.   But this aspect of the plan is unlikely to require actual reductions in the number of weapons.

8.   Cigarette makers have agreed to submit to regulation by the Food and Drug Administration, which could ultimately require a reduction of nicotine in cigarettes and dampen sales further.

9.   Environmentalists say pollution reductions should be required by law.

10.   In addition, he said, the New York plan could add momentum to efforts in Congress to pass federal legislation that would require similar reductions.