James Dubek

The Supreme Court said President Trump's tariffs under the International Emergency Economic Powers Act weren't allowed.

But Trump quickly said he was imposing worldwide tariffs under a different law, known as Section 122.

And that's not his only option.

He can also use provisions related to national security or unfair trade practices.

Carol Labinder is an economics professor at the University of Texas at Austin.

The tariffs could be challenged again in court, but in the meantime, economists say don't expect any big price cuts.

James Dubeck, NPR News.