Almost everyone will miss, in part because outcomes appear in a sequence that few care to follow, but buried in the Trump tariff Executive Order {SEE HERE} you will discover something.  As the unofficial Deep State strategist, and the self-appointed misfit explainer of stuff, lol, we will explain:

[Sec 2, SubSection (h)]: Sec. 2. (a) All articles that are products of Canada as defined by the Federal Register notice described in subsection (e) of this section (Federal Register notice), and except for those products described in subsection (b) of this section, shall be, consistent with law, subject to an additional 25 percent ad valorem rate of duty. Such rate of duty shall apply with respect to goods entered for consumption, or withdrawn from warehouse for consumption, on or after 12:01 a.m. eastern time on February 4, 2025, except that goods entered for consumption, or withdrawn from warehouse for consumption, after such time that were loaded onto a vessel at the port of loading or in transit on the final mode of transport prior to entry into the United States before 12:01 a.m. eastern time on February 1, 2025, shall not be subject to such additional duty, only if the importer certifies to CBP as specified in the Federal Register notice.

[…] (h) For avoidance of doubt, duty-free de minimis treatment under 19 U.S.C. 1321 shall not be available for the articles described in subsection (a) and subsection (b) of this section. {link}

So, Canada and Mexico get 25% tariffs, but China only 10%. 

Why? 

The secret is in that subsection "(h)" when it talks about de minimis treatment.

Essentially, what President Trump is doing is levying a much more massive import tax, and possible confiscation impact on the core source of fentanyl (and other illegal) substances.

(Bloomberg) — President Donald Trump's new trade levies against China, Canada and Mexico include a broadside against e-commerce, with apparent plans to extinguish a long-held tariff exemption for packages worth less than $800.

Trump's executive orders directing 25% levies on Canada and Mexico — plus a 10% duty on China — specify that the "de minimis" exemption for small packages no longer applies. Under the exemption, products below that dollar amount are able to enter the US without tariffs — a boon for China's e-commerce retailers who ship often cheaper wares directly to consumers in the US.