I don't know if I buy this argument. If the US sends oil to another country, which burns it for energy, produces a finished good and exports that back to the US, then the CO2 released isn't accounted for in production-based numbers. But it seems to me like it isn't really properly accounted for in the consumption-based numbers that Noah is holding up, because those are effectively giving the US a credit for exporting the oil in the first place that offsets the imported good. As he says, the US's exports are carbon-intensive and that largely explains the difference being so small.
Noah also tries to refute the perception that manufacturing is in decline in the US, but he doesn't adjust per-capita and doesn't account for the obvious fact that major US exports are looking more and more like raw materials and less like finished goods, while imports are the other way around. Aircraft and ICs used to compete for top spot on the US export list. Since 2008 it's petroleum and oil.