Former Vice President Mike Pence has publicly supported Costco in its lawsuit against the Trump administration over import tariffs.

“American companies and American consumers pay the cost of American tariffs,” Pence wrote in a post to X on Monday . “Free trade with free nations.”

The case, which was filed on Friday in the U.S. Court of International Trade, focuses on high tariffs, or import taxes, that President Donald Trump started placing on goods from several countries, including China, Mexico and Canada, earlier this year.

The lawsuit states that Congress, not the president, can set tariffs and therefore Trump exceeded the authority granted to him by the 1977 emergency law called the International Emergency Economic Powers Act (IEEPA).

“The text of IEEPA does not use the word ‘

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