China emits twice as much CO2 as the US. China has pledged that its peak emissions year will be 2030 and is currently building coal-fired plants at an alarming rate.
India is the third greatest CO2 emitter and has made it clear that they will not do anything to put back.
The claims that renewables can replace coal, natural gas, and oil is preposterous. Wind power and solar are unreliable and expensive, and nuclear power has been so unfairly demonized that no one will ever build another nuclear power plant.
Conclusion: If the US reduces its carbon emissions to zero, by 2030 we will be an impoverished nation and the CO2 levels in the atmosphere will be equal to or greater than they are today. Why is that desirable?