The interesting thing is that at least my shipments from Aliexpress to the EU were always invoiced at $3-5 no matter how much I actually paid for them, circumventing the need to pay tax and duty on packages. I wonder if they’ll do the same now for the US, because my last packages (to the US) were delivered in February and were invoiced at the correct amount (though they were not above the de minimis amount)

This has been a widespread phenomenon in the US since forever in the private shipper space. "Mark as gift" "value is $5".

The issue of course is that it's fraudulent. It remains to be seen how closely the US is going to be enforcing it. I have a feeling Chinese shippers will be under the most scrutiny.