At this point the likely adverse effects are so obvious you would think that the elite of the leading polluters such as the US and China would act even if only

At this point the likely adverse effects are so obvious you would think that the elite of the leading polluters such as the US and China would act even if only for their own self-interest. They won't get away unharmed if the climate changes - large parts of their respective countries may desertify and 1930s Dust Bowls could be common. What's the backup plan, for instance for the US? Invade Canada where climate change may make arable land accessible? It's not the 1950s anymore where people knew about climate change but only speculated that it will only become relevant some time in the far future. The effects occur now and will change the world by the end of the 21st century, even humans with their inability to comprehend long-term consequences should grasp this now. I really don't get how - at this point, with our current knowledge - the world is still just doing nothing.