The majority of the comprehensive tariffs imposed by President Donald Trump during his second term face a decisive final test that will determine whether he can continue to enforce them, as well as whether companies are eligible to recover huge sums.

The United States may have to return more than $200 billion to American companies if Trump loses the tariff lawsuit.

This potential shift in the tariff case comes after a federal appeals court ruled that Trump unlawfully relied on the International Emergency Economic Powers Act (IEEPA) to impose widespread tariffs on countries.

Trump had used those powers to push import tax rates up to 50% on India and Brazil, and up to 145% on China earlier this year, according to a Bloomberg report.