The economist Sébastien Jean explains in an interview that the US president's decades-old obsession with tariffs is not about to disappear.

If you think the Supreme Court ruling heralds a return to pre-Trump business as usual - think again.

The US Supreme Court ruled that 'reciprocal' tariffs imposed by the American president were illegal.

The decision adds to economic uncertainty, as deals Donald Trump struck with other countries are upended

The economist Sébastien Jean explains in an interview that the US president's decades-old obsession with tariffs is not about to disappear.

President Trump's new tariffs could further strain global trade relations, pushing businesses to operate more cautiously and hurting the U.S. economy.