WASHINGTON - U.S. President Donald Trump's new 10 percent global tariff took effect Tuesday, amid growing confusion at home and abroad about his approach to trade since the Supreme Court's invalidation of a central pillar of his economic agenda.

The new surcharge, which can run through July 24, replaced Trump's so-called reciprocal tariffs targeting almost all U.S. trading partners, as well as fentanyl-related levies he applied to goods from China, Canada and Mexico, using a 1970s-era emergency law.

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