In Europe, Alibaba has their own warehouse in the Netherlands. I wonder if that's to be able to do a single "international" import. Could the same happen in the US?
They may be compelled to do that; there's 1.3 million packages from Chinese retailers a day coming in through the Netherlands, but since they're all individual packages, they fall under a threshold for import taxes. There's now calls to drop that threshold so that people pay import taxes for small items as well, and / or to compel Temu and co to stop shipping individual packages but do it in bulk.
Aliexpress does that as well, with a warehouse in Hungary. They ship the products there, import them en masse as a business, then relabel and send them off to the recipients.