$BTC The tariffs imposed by the United States are a series of trade protectionist measures taken in recent years, which have had a profound impact on the global economy and trade order. The following is a relevant introduction:

Types of Tariffs Imposed

- Section 201 Tariffs: Under Section 201 of the Trade Act of 1974, the President is allowed to use tariffs or import restrictions to protect domestic industries for a period of up to 4 to 8 years, applicable to all imported products.

- Section 301 Tariffs: The United States began imposing tariffs on China in 2018, citing unfair trade practices by China in technology transfer, intellectual property, and innovation. During the Trump administration, the tariff rates ranged from 7.5% to 25%, while under the Biden administration, the rates for certain products were raised to 100%.

- Section 232 Tariffs: The United States, under Section 232 of the Trade Expansion Act of 1962, imposed tariffs on certain imported products for national security reasons. Starting in March 2018, tariffs of 25% and 10% were imposed on steel and aluminum products, respectively; in January 2020, the scope of taxation was expanded, and in February 2025, the 25% tariff on steel imports was reinstated, while the aluminum import tariff was raised to 25%.