First of all, the decision of the Supreme Court we take very seriously. It's the new law of the land. And secondly, we're taking some time to fully understand the details of the decision... My attitude is, is that we have laid out a plan that will affect greenhouse gases that come from automobiles by having a mandatory fuel standard that insists upon using 35 billion gallons of alternative fuels by 2017, which will reduce our gasoline usage by 20 percent and halt the growth in greenhouse gases that emanate from automobiles. In other words, there is a remedy available for Congress. And I strongly hope that they pass this remedy quickly.

Bush, who opposes mandatory limits on carbon dioxide emissions, also reiterated his belief that rapidly developing countries such as China and India must do more to control pollution. Scientific research suggests that man-made greenhouse gases contribute to global warming.

Efforts to establish national emissions limits have gained traction in Congress since the Democrats became the majority party. Last month, former CIA director John Deutch recommended in a report to international civic leaders that the United States enact an EU-style cap-and-trade program among other measures to control greenhouse gas emissions. In January, a coalition of US businesses and environmental groups called for federal legislation to limit emissions. Overseas, the British government last month introduced a draft environmental bill that could control greenhouse gas emissions through 2050.