Since returning to office last year, U.S. President Donald Trump has resumed an aggressive tariff strategy aimed at reshaping global trade relationships and addressing concerns including forced labor, intellectual property theft, and industrial overcapacity. After a turbulent start that included a Supreme Court ruling striking down many of his initial tariffs imposed under emergency powers, the administration is now employing more traditional, legally tested statutes to rebuild its tariff framework.

In recent weeks, Trump’s administration announced new tariffs of 10% to 12.5% on imports from 60 countries, citing weak enforcement of forced labor prohibitions. These duties, implemented under Section 301 of the Trade Act of 1974—a measure previously used against China—essentially replace a temporary global tariff that expired. The U.S. Trade Representative's office stated these new levies cover 99.4% of U.S. imports. Officials have also launched investigations into alleged excess industrial capacity targeting 16 major trading partners, including the European Union, Japan, South Korea, Mexico, Vietnam, and China, as well as probes into intellectual property violations.

Experts note this marks a transition to a more durable tariff "wall," built using longer-established legal authorities that have a stronger track record in courts. Dan Ujczo, a trade lawyer specializing in U.S.-Canada relations, characterized the current phase as the "end of the beginning" of Trump’s trade agenda, with large parts expected to be fully in place by the end of the summer.

While the previous tariffs generated substantial revenue—$166 billion from Trump’s so-called “Liberation Day” tariffs alone—and helped offset federal deficits, some recent court rulings have necessitated refunds to importers, complicating collections. Despite legal challenges initiated by small businesses against the latest tariff actions, trade and legal analysts observe that courts have typically deferred to executive decisions concerning foreign trade enforcement, especially regarding human rights concerns like forced labor.

At the same time, the administration’s use of less conventional tariff statutes has raised additional concerns. For example, 50% tariffs on a range of Canadian products, imposed under Section 338 of the Tariff Act of 1930 due to alleged discriminatory treatment of U.S. exports, represent a novel and less tested legal approach. Analysts warn this approach increases uncertainty among trade partners and could signal an ongoing willingness to deploy punitive measures sporadically, exemplified by recent threats to impose tariffs on Spain over NATO defense spending.

The continuation and expansion of tariffs have elicited mixed reactions from U.S. businesses. Mark Bissell, CEO of a Michigan-based company, indicated his firm had anticipated tariffs remaining within the 10-15% range and managed operations accordingly without stockpiling imports. Conversely, trade experts caution that persistent tariff volatility remains a risk to the global trading system and can adversely affect American households and businesses over time.

Despite these tensions, the administration maintains that its trade strategy remains consistent, focusing on reshoring manufacturing, shrinking the trade deficit, and enforcing national security safeguards for strategic industries such as semiconductors and robotics. U.S. Trade Representative Jamieson Greer emphasized the administration's commitment to using all available authorities to achieve these goals, while asserting that tariff rates would not surpass internationally agreed caps—such as the 20% ceiling agreed upon with China last November, which builds on prior 25% duties.

For trading partners, the prospect of additional tariffs looms large. Investigations into excess capacity and other trade issues involving major economies—including China, the EU, Japan, and India—are ongoing, with officials cautioning the U.S. will not breach existing bilateral tariff limits. Nonetheless, some analysts view the current measures as falling short of addressing more systemic issues, such as China's restrictions on rare earth exports, complicating the global trade landscape further.

In sum, Trump’s tariff policies have evolved from a rapid and often unpredictable initial approach to a more legally grounded, multifaceted strategy poised to have lasting impacts on international trade dynamics and U.S. economic policy.