Michigan Gov. Gretchen Whitmer has followed the path laid by New Mexico Gov. Michelle Lujan Grisham and Illinois Gov. J.B. Pritzker in joining the U.S. Climate Alliance. All three are new Democratic governors replacing Republican predecessors.
The environment and climate change may not be top issues in the nation's hotly contested gubernatorial contests next Tuesday, but their outcomes can cause policy changes. Take North Carolina and the election of Roy Cooper, a Democrat, two years ago.
States and cities are reacting to President Trump's withdrawal from the Paris Climate Agreement on Thursday. Three states formed the U.S. Climate Alliance; by Monday, it had grown to 13. Initially 30 mayors signed in support; it's now over 200.