Don't leave out the CIA and the US Military, they've already warned at least three US Presidencies.

US Military:

The U.S. military is terrified of climate change. It's done more ...www.nbcnews.com › think › opinion › u-s-military-terr...

Sep. 20, 2020 — The U.S. military is terrified of climate change. It's done more damage than Iranian missiles. ...

CIA:

https://www.cia-ica.ca/docs/default-source/miscellaneous/pppccse.pdf?sfvrsn=0#:~:text=What%20is%20the%20general%20position,change%2C%20resource%20scarcity%20and%20sustainability%3F&text=The%20Institute%20recognizes%20that%20climate,managed%20in%20the%20public%20interest.