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Because Trump is unlikely to approve them, California officials say they had no choice but to abandon the state's groundbreaking rules for zero-emission trucks and cleaner locomotives.
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One of the world’s largest commercial truck manufacturers is refusing to sell its diesel big rigs in Oregon, even though its North America headquarters is in Portland.
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The Supreme Court justices agreed to review whether oil companies have standing to try to overturn a federal waiver for a California clean-car rule that ramped up electric car sales. The standards are the cornerstone of California’s efforts to clean its air and combat climate change.