Costco joined a fast-growing list of businesses suing the Trump administration to ensure eligibility for refunds if the Supreme Court strikes down the president’s signature global tariffs policy, Bloomberg reports.

Wall Street Journal : “If the court does strike down the tariffs Trump initiated in April, it isn’t clear how or whether previously paid duties would be refunded. The onus would be on the justices to decide and they gave little indication how they might unwind the president’s signature economic policy. Though unlikely, it is theoretically possible that Congress could move to retroactively authorize the tariffs Trump imposed.”

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