Supreme Court declines to hear challenge to California’s strict vehicle emissions rules

The Supreme Court declined Monday to take up an appeal from conservative states challenging California’s ability to establish strict vehicle emission rules that effectively set the standard for the rest of the nation.

​ The Supreme Court declined Monday to take up an appeal from conservative states challenging California’s ability to establish strict vehicle emission rules that effectively set the standard for the rest of the nation. Read More Breaking News, Latest News and Videos | CNN