The Supreme Court’s ruling striking down many of President Trump’s tariffs on Friday immediately cheered consumers, who hoped it would reduce the cost of imported products. The tariffs, which Mr. Trump enacted under the International Emergency Economic Powers Act,

President Donald Trump is going to be smarting for a few days, following a decisive smackdown Feb. 20 of his treasured tariffs by the U.S. Supreme Court.

The high court ruled that Trump overstepped his authority by relying on a decades-old emergency law to impose tariffs on goods from nearly every country.