This sentiment, branded differently but functionally the same, is punished in the US currently, because the hordes are upset their Shein costs more in the short term.

We've entered a new era where every nation is walling up its industries (tariffs and fines), its demographics (via immigration), and it's culture (internet and social media control).

A customs duty and a tariff are functionally the same, raising the cost of foreign goods to protect local industries.

They can always have a local warehouse.

At the volumes AliExpress/Temu/Shein ship I'm very surprised it isn't already cheaper to do so rather than try to air freight everything (air freight can easily cost $4/kg, Which is part of the reason all the items are very lightweight)

Rise order minimums or just make their suppliers to eat it. They will still be cheaper even if you up the price by say 10%.