The third argument connecting the Supreme Court hearings to the stock market is the claim that tariffs are reviving U.S. industry and the U.S. economy, and that’s a major reason the stock market is booming. President Trump has promised a “golden age” for the U.S. economy.

U.S. President Donald Trump's tariff regime faces its biggest legal test yet this week.

Trump argued that the outcome will determine whether presidents can use tariffs freely as a tool for both economic leverage and national security.