Bush was quoted describing the bill as "a major step toward energy independence and easing global warming".
Environmentalists were reported as expressing gratitude that the US was finally adopting a number of green polices, but warning the measures were too limited and not due to be implemented for years.
Other measures in the legislation include a statutory target of a 70% increase in the use of energy efficient light bulbs and improved energy efficiency targets for fridges, freezers and dishwashers.
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By Simone ver.β