It's not only on the USA to reverse the climate change. Every country has to participate. Yes some countries can do more like the USA, Europe, China, Russia, India and other countries have less possibilities to reduce CO2 levels. I wish USA would take a leadership role in combating climate change but this seems very unlikely at the moment, especially since corona pandemic became climate change not important anymore.
So if USA is not acting on everyone's interest, the other countries should go ahead and be a good example. With a combined international approach we could try and convince USA to join. If Europe! China and Russia would work more together it would be a start.
That's a nice wish but no one is going to do that. Any country that makes a serious effort towards decreasing their emissions will undoubtedly harm their economy, and the result of their decrease of emissions will be dispursed amongst everyone, including all the countries that didn't do anything (and even those that increased their emissions). You can't convince any political leader that the right thing to do is destroy their country so that everyone else can survive, especially when their country isn't even a major contributor to GHG emissions. Even if it were, major emitters don't have that large a share of the pie either.
I have a great idea!
Maybe if we all joined in a single world government under the people who developed their family wealth during the industrial revolution (and sometimes before) that would solve the problem of 'rouge countries' not de-industrializing fast enough. They could manage things without all that pesky voting and citizen representation and such-like which would be much more 'efficient'. They cannot stop talking about solving the 'overpopulation problem' either so I'm sure they have some good ideas in that realm.
Said families seem to know everything there is to know about 'global climate change' and how to 'solve the problem'...the problem they dreamed up in the 1960's... I guess our only hope is to trust them to run things for the betterment of humankind and the planet. After all, this class of people (owners of Standard Oil, Halliburton, Bayer/Monsanto, etc) have never done anything counterproductive to well being of the peeps or to harm and pollute the environment in the past. Why would they start now after we put all of our trust in them?
https://www.youtube.com/watch?v=KCHyP8sj92gObama's science czar John Holdren was one of the 'science advisors' in that propaganda film. As one studies this stuff, it's actually a relatively small group of players, and an even smaller group of capitalists who fund the projects (which they get tax breaks for.)