Fijian Prime Minister Frank Bainimarama announced Tuesday that California’s Governor Jerry Brown will play an instrumental role in this November’s climate conference in Bonn, Germany as the UN Special Envoy for States. As the Associated Press notes, Brown stepped into an increasingly larger role on the international climate stage since President Trump withdrew the United States from the 2015 Paris Agreement.

Brown will be joined at this fall’s COP23 by Oregon’s Governor Kate Brown and Washington’s Governor Jay Inslee. The three represent the growing coalition of American governors who have joined the U.S. Climate Alliance to fight climate change as subnational actors.