A new US administration and Congress need to be voted in. There is one party who backs fossil fuel interests and denies anthropogenic climate change. They're currently in charge. The American public didn't see that as an important enough issue in 2024.
They need a complete reworking of the government. The fact is that bum-fuck states with a handful of citizens can use their senate seats to hold the country hostage. Nothing will ever get better until that is resolved.