Mr. Trump announced the tariffs imposed on countries involved in exports and imports with the U.S., including Vietnam.

Analysis of the principles of tariff application of the U.S. towards Vietnam

Reciprocity Principle:

Reciprocal tariffs are designed based on the principle that the U.S. will impose a tariff equivalent to the tariff that the partner country imposes on U.S. goods. In this case, Vietnam is noted to impose a 90% tariff on U.S. goods, so the U.S. also imposes a 90% tariff on Vietnamese goods (according to the column "Tariffs Charged to the U.S.A.").

However, the actual tariff that the U.S. applies after reduction (46%) shows a modification, which may be based on bilateral trade agreements or preferential policies.

Trump, being an economic operator, often plays the game of raising prices high and then pretending to lower them significantly, making partners feel appeased and entering negotiations with a sense of being favored.

In general, these tariffs are not applied to all goods; specific items that are strategically signed or are in common economic organizations will have their own preferential tariff rates.

In conclusion: Because the U.S. imposes high tariffs on Vietnam, Bitcoin has to pay the price, dropping from 88k to 82k.