Actually I have to correct that because the USA is not the worst per capita (my apologies), but it's up there with the top worst (Canada, Australia, Saudi Arabi

Actually I have to correct that because the USA is not the worst per capita (my apologies), but it's up there with the top worst (Canada, Australia, Saudi Arabia and a bunch of smaller countries) and, of course, more important because of the size of its population (1). It seems that what it's in dispute is the "not doing so much like other nations". I would say there are two ways to look at it: pledges and historical data. I don't think is necessary to demonstrate that the USA current pledges are below the Paris agreement countries. For historical I just will take 2019 that was a specially good year for USA CO2 reductions. from https://www.snopes.com/fact-check/us-leads-world-reducing-co2/ https://www.snopes.com/fact-check/us-leads-world-reducing-co... >>"It’s true that, according to the IEA’s February 2020 report, the U.S. achieved a greater absolute reduction in CO2 emissions than any other country, in 2019. However, claims that the U.S. therefore “led the entire world” or was a “global leader” in CO2 emissions were belied by the fact that other countries (including Germany, Japan, and likely others) achieved a superior rate of reduction in CO2 emissions. Although not a country, the European Union achieved both a larger absolute reduction and a greater rate of reduction in CO2 emissions than the US did. " (1) - https://www.worldometers.info/co2-emissions/co2-emissions-by-country/ https://www.worldometers.info/co2-emissions/co2-emissions-by...