I'm going to make this political, but as this is an election year for the US, Republicans have outright stated they will gut and destroy the EPA should they take the White House this year which would be disastrous for the climate.
That's just your conjecture. It seems unlikely that would be the platform for the party in its entirety. Parts of it, maybe. The party didn't set anything like this the last time. I'd expect a similar lack of cohesion and following Trump this time. Agenda 47 is the most probable.
The real problem is that both sides have gotten more extreme, more polarized, and less likely to make legitimate compromises or understand the concerns of the other side.
Edit: why disagree?
Major things you may recall are withdrawing from the Paris Climate Agreement, placing the EPA and Interior Department under the control of officials who denied the reality of climate change, and repealing the Clean Power Plan.
In their own words, here are the changes they plan to make to the EPA and Department of the Interior if they take control again: https://static.project2025.org/2025_MandateForLeadership_CHA..., https://static.project2025.org/2025_MandateForLeadership_CHA.... These documents were not written to drum up votes, they are very detailed policy plans that most voters will never see.
Yes, I see 100 environmental rules rolled back. Many of which make little difference in people's lives as I said before. Most of those rules have state level rules that provide similar protections anyways. I don't see the Paris Climate Agreement as a big deal. It's a voluntary pact that we had no chance at meeting anyways. It's mostly just symbolic and both sides make a big deal about it for riling people up. I'd they really wanted to make a big deal with it, the countries would have pooled funding and worked together on a research org that could have created new technologies free to license. Many of the rules probably would have been better off left on the books, but in effect not much changed. I get that your view might differ. I'm sure you there are (non-environmental) rules that I could say are a big deal that you would argue are not.
It is also written by the former Secretary of HUD, Deputy Secretary of Homeland Security, several members of the presidential transition team, CFO of the Commerce Department, Chief of Staff of the EPA, Secretary of Defense, FERC Commissioner, several senior presidential advisors, director of the BLM, director of the Office of Civil Rights, FEC Commissioner, director of the OMB, director of budget policy, and many more senior officials from the previous administration. These authors represent all aspects of the last Republican administration, and combined with the 80+ organizations they represent the entirety of the party.
The 2020 meeting decided not to adopt a new one. They are using the one from 2016. This is the official platform.
"and combined with the 80+ organizations they represent the entirety of the party."
Please stop saying untrue things. Please see the official platform.
Any yes, previous officials participate in writing policy documents for various political organizations... for both sides.