Wouldn't it be more apt to compare consumption vs production. It looks like US is about 26% of global GDP from a quick google. But I'm also suspect of comparing GDP's across nations that have very different methodologies.
Also services are counted there, so it's likely we're exporting services in exchange for manufactured products.
US GDP is grossly inflated by 'services' many of which are non-productive, even deleterious to society. Healthcare is probably the best example of this, I believe it is 10-15% of US economy, yet health outcomes for the people can be extraordinary poor, seeing as majority of bankruptcies in the country are as a result of healthcare costs incurred. We need to find a way to separate 'good' vs 'bad' GDP because the measure is way too crude
Seems like U.S. healthcare spending is 17.5%-19.5% of its GDP: "Overall, health spending was 17.6% of GDP in 2023, similar to pre-pandemic shares (17.5% in 2019) after an uptick in 2020 (19.5%) and 2021 (18.3%)." (https://www.ama-assn.org/about/ama-research/trends-health-ca...)
Also services are counted there, so it's likely we're exporting services in exchange for manufactured products.