Unlike the global tariffs deemed illegal by the Supreme Court, the more recent duties are so-called 301 tariffs, named after the section in the Trade Act of 1974 that grants Trump authority to respond to unfair trade practices. These new tariffs are considered more resilient to legal challenges.
While they may give Trump a more durable tariff wall, they come at a fragile time for the global economy with financial markets already on edge over the Iran war and the spike in oil and gas prices.