The report released early Wednesday by the U.S. Trade Representative said Canada, Mexico, Taiwan and the United Kingdom and some other countries and territories would face 10% additional tariffs for allegedly failing to enforce a forced labor import ban.

A 12.5% additional tariff would be imposed on China, Japan, India, South Korea, Brazil and Switzerland and dozens of other countries.

“The failure of our most important trading partners to address the importation of goods made with forced labor is unacceptable. This creates a dynamic where American workers are forced to compete globally on an unlevel playing field,” USTR Ambassador Jamieson Greer said in a statement.

He added that “each of our trading partners must do more to ensure that trade does not perversely encourage and entrench forced labor globally.”

The USTR said failure to prevent such imports is “unreasonable and burdens or restricts U.S. commerce.”

This latest barrage of tariffs is likely to unsettle key trading partners that have been hit by waves of tariffs since President Donald Trump returned to office early last year.

Just two weeks ago, the European Union approved a tariff deal with the United States to cap tariffs on most EU exports at 15% following intense debates among the EU’s 27 nations and threats by European lawmakers to block the agreement.

Trump recently returned from a visit to China, where he and its leader Xi Jinping discussed expanding market access for American businesses in China and increasing Chinese investment into U.S. industries. The two leaders agreed to set up separate boards of trade and investment — though few details were provided.

A Chinese government spokesperson denied the forced labor allegation and called for resolving economic issues through dialogue, saying a trade war doesn’t serve anyone’s interests.

“There is no such thing as forced labor in China, and we oppose using it as an excuse to engage in political manipulation,” Foreign Ministry spokesperson Mao Ning said in Beijing.

The new tariffs would not take effect immediately. They are subject to public comment and review. Public hearings on the proposed duties are due to begin on July 7.

The investigation into alleged failure to prevent imports of goods allegedly made by forced labor was conducted under Section 301 of the Trade Act of 1974. The strategy would enable Trump to skirt limits on his tariffs imposed by the Supreme Court.

It found that 60 countries investigated had failed to enforce a prohibition on the importation of goods produced with forced labor.

The report defined forced labor as “work or service exacted from a person under the menace of any penalty for its nonperformance and for which the worker does not offer himself voluntarily.”

It cited an estimate by the UN’s International Labor Organization that as of 2021, 27.6 million people were engaged in forced labor.

Rice imported from Myanmar, tobacco from Malawi, beef from Brazil, and cotton and polysilicon from China were among the many products it said are prone to involving forced labor.

The U.S. has long said imports of goods that include material from China’s far-western Xinjiang are at risk of using forced labor. Beijing denies allegations of forced labor in the Muslim majority region.

The Supreme Court ruled in February that Trump had overstepped his authority by using a different law – the International Emergency Economic Powers Act (IEEPA) of 1977 – to impose sweeping tariffs on U.S. trading partners.

The Trump administration has said it would appeal a federal judge’s order making all companies that paid the duties on those earlier tariffs eligible for refunds.

Earlier this week, the administration separately proposed 25% tariffs on imports from Brazil, charging that the world’s 10th-biggest economy engages in trade practices that are “unreasonable’’ and that “burden or restrict U.S. commerce.’’

The USTR said its investigation showed Brazil had lax anti-corruption enforcement and unfair tariffs of its own, among other things.

In its nearly 100-page report on forced labor, the USTR said that even if a country enforces a ban on forced labor domestically, importing goods made with forced labor violates the rules of fair trade.

It said some key items would be exempt from the additional tariffs or subject to lower tariffs, including certain textiles, tomatoes, bananas, coffee and some metals.

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AP Business Writer Elaine Kurtenbach contributed to this report.