The Supreme Court's majority opinion, as much as the dissent, shows that the state should not be permitted to execute its citizens.
EPA rules limiting toxic air pollution emissions would have prevented thousands of cases of asthma, birth defects and other health problems.
Nikki Willoughby is social media manager at Common Cause. She oversees community action and serves as editor of the CommonBlog. Find her on Twitter @Nikki4CC or email her at firstname.lastname@example.org.