President Donald Trump has revived and expanded his tariff policies through new legal mechanisms following a recent setback from the U.S. Supreme Court, signaling a continued emphasis on trade protectionism during his tenure. This week, the administration imposed sweeping tariffs on products imported from 60 countries, including a 25 percent duty on Brazilian goods, while also enacting a 50 percent tariff on numerous Canadian items under a previously unused statutory authority.

The latest tariffs ranging from 10 to 12.5 percent stem from investigations citing concerns over forced labor, using Section 301 of the Trade Act of 1974. Analysts note that this section has historically withstood judicial scrutiny, making the new tariffs relatively more robust against legal challenges. U.S. Trade Representative Jamieson Greer reportedly ensured adherence to procedural requirements before implementing these measures.

More controversial are the tariffs targeting Canada, enacted under Section 338 of the Tariff Act of 1930, which had not seen prior application for such broad tariffs. These duties were justified by allegations of Canada discriminating against U.S. exports and took effect after a one-month notice period. Observers characterize this move as punitive and indicative of the administration’s willingness to employ less conventional trade tools, potentially increasing uncertainty for trading partners.

The tariffs have already provoked legal responses from affected small businesses. While prior court rulings have generally supported the use of Section 301, future litigation may hinge on the official findings underpinning the imposed duties. Critics argue that Trump’s authority to levy such widespread tariffs remains subject to debate, especially given the Supreme Court’s earlier ruling against his use of emergency economic powers to fast-track previous tariffs earlier this year. However, sector-specific tariffs on steel, automobiles, and other goods remain in place under different legal bases.

Trump’s aggressive trade stance, first unveiled shortly after his return to the presidency, has resulted in several investigations targeting forced labor and other trade practices across a broad swath of countries, including major economies such as the European Union and India. While prior investigations—like the one into China during Trump’s first administration—were more protracted, recent probes have been expedited, lasting just a few months.

Experts caution that the tariffs impose long-term entrenchment in U.S. trade policy, a trend also observed under the administration of former President Joe Biden, who maintained many of Trump’s tariffs on China. The financial importance of tariff revenue complicates any prospective rollback, even if future administrations sought to dismantle these barriers.

The Trump administration has concurrently negotiated 19 reciprocal tariff agreements but continues to investigate 16 countries, including China, the EU, and Japan, for concerns over excess industrial capacity. Although officials have pledged not to exceed agreed tariff thresholds, ongoing apprehension among trade partners persists, amid fears of further escalations and uncertainty in global trade relations.