The world is producing about 35B tons of CO2 this year, where India and China are the biggest culprits. U.S. contribution: 6B tons.
If you think U.S. alone can save the world from global warming (or now it's called climate change) by bankrupting itself, think again.
India and China don't care about it. By 2050, India and China alone will produce about 50B tons of CO2 a year.
Personally, I don't believe human is the cause of global warming. Earth temperatures go up and down, even before human existed.