Trade and tariffs are a bit more complex than many assume. Also it is select items subject to select range of tariffs.
Here's just one example;
...
How China skirts tariffs into the US
....
China’s rising exports to Mexico
When a U.S. consumer buys something on Amazon from a Chinese storefront, the order sets in motion a fairly sophisticated chain of events. A notification of the order is sent to the seller, who could be operating directly from China or via a warehouse in Mexico.
Upon receiving the order, the seller prepares the item for shipment. If the product is located in China, it might first be sent in bulk to Mexico, leveraging the strategic advantages offered by Mexico’s logistics infrastructure and trade agreements. More likely is that if the Chinese shipper wants to take advantage of Section 321, the shipper has already warehoused the inventory in Mexico.
Each item destined for the U.S. is then individually packaged and valued at less than $800 to ensure it meets the criteria for duty-free entry. This valuation is key, so for more expensive, multipart products, it sometimes makes sense to ship multiple boxes in order to distribute value.
The packaged goods are then transported to the U.S.-Mexico border, either directly from a Mexican warehouse or after arriving in Mexico from China. At the border, the consignments are subject to inspection by CBP. Thanks to the precise labeling and adherence to the Section 321 rule, these packages typically qualify for expedited customs processing.
Once cleared through customs, the shipments enter the U.S. logistics network and are directed next to distribution centers strategically located across the country. Here, the packages are sorted and dispatched for final delivery.
...
Chinese trade flow into Mexico is helping to build up the latter’s manufacturing capabilities, which is a long-term positive for the U.S.
www.freightwaves.com