I was of the impression that US contribution to global emissions was relatively low for our population size and per capita energy usage thus making domestic climate change policy relatively small potatoes. Is that not true? Is there more to it than that?
The United States is ranked 16th highest in the world for emissions per capita.
https://en.wikipedia.org/wiki/List_of_countries_by_carbon_di...
https://www.worldometers.info/co2-emissions/co2-emissions-pe...
Per capita energy usage is an interesting choice of metric.
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US is 12% which is second highest. But you’re right that it’s too small a percentage to have enough effect on its own.