And what about all the crap America imports from all over the world? (I use "America" as a shorthand for the entire developed world. We're all responsible)

I keep being told that America doing anything to reduce emissions is pointless "because China builds a new coal plant ever hour" or something factoid like that. But China does a substantial portion of the world's manufacturing. So if you're giving America's emissions a pass, you should give China a pass as well, right?