US has reduced their global carbon emissions. Even when adjusting for trade, it is down considerably over the last 20 years. Mainly due to dematerialization, basically a free market economy doing more with less (e.g. efficient packaging uses less materials and is cheaper).

US and the Western world can continue reducing carbon emissions and it won't make a bit of difference.

Try spending 5 minutes on google before you spout uniformed opinions

https://ourworldindata.org/profile/co2/united-states

https://ourworldindata.org/consumption-based-co2