The temporary tariffs of 8–30% were originally scheduled to remain in effect until 2005. They were imposed to give U.S. steel makers protection from what a U.S. probe determined was a detrimental surge in steel imports, as more than 30 steel makers had recently declared bankruptcy. Canada and Mexico were exempt from the tariffs because of penalties the United States would face under NAFTA. Additionally, some developing countries such as Argentina, Thailand, and Turkey were also exempt.

The response was immediate.

Domestically, some of the president's political opponents, such as Democratic House Representative Dick Gephardt, criticized the plan for not going far enough. For some of the president's conservative allies, imposing the tariff was a step away from Bush's commitment to free trade. Critics also contended that the tariffs would harm consumers and U.S. businesses that relied on steel imports, and would cut more jobs than it would save in the steel industry.

The international response – like now – was more vocal.

Immediately after the announcement, the European Union announced that it would impose retaliatory tariffs on the United States, risking the start of a major trade war. To decide whether or not the steel tariffs were fair, a case was filed at the Dispute Settlement Body of the World Trade Organization (WTO). Japan, Korea, China, Taiwan, Switzerland, Brazil and others joined with similar cases.