Abstract
It seems so long ago. In August 2006, the American Planning Association joined the U.S. Conference of Mayors, National Association of Counties, International Municipal Lawyers Association, and the cities of Seattle; Albuquerque; Burlington,Vermont; and San Francisco to file an amicus brief in the seminal climate change case, Massachusetts v. EPA. Many believe Justice Stevens's decision for the 5–4 majority was a watershed moment, acknowledging a truth that today both presidential candidates agree with.