California was the first of several states to establish their own strong protections decades ago, and has stood as a national and often global leader on clean air rules.

This year, in legislatures and governors’ offices across the country, we have already seen champions announce ambitious new plans and seek to “Trump-proof” climate goals. In the memo below we’ve laid out new state level clean energy legislation, proposed public transportation and electric vehicle investments, and actions taken to hold the biggest polluters accountable.