The Supreme Court has weakened Trump's hand in dealing with other nations, writes Anthony Zurcher.

The Supreme Court is poised to rule on a broad swath of President Donald Trump's tariff agenda. The decision carries big implications for household finances.

The decision is a stinging defeat for Trump — and three conservative justices voted against him.

The decision is a significant loss to US President Trump on an issue that has been critical for his economic agenda.

Ruling is blow to Trump’s bold assertions of authority and topples key pillar of aggressive economic agenda

Trump, as recently as Thursday, has talked up the consequences of the Supreme Court striking down his tariffs prior to the seismic ruling.

The Supreme Court ruled against a centerpiece of President Donald Trump's tariff agenda on Friday. Consumers could save money as a result, economists said.

Refunds for importers and negotiations for new trade deals are among issues to watch after the Supreme Court overturned Trump's tariffs.

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

The Supreme Court has weakened Trump's hand in dealing with other nations, writes Anthony Zurcher.

The ruling opens the door to potentially hundreds of billions of dollars in tariff refunds.

The U.S. Supreme Court ruled Friday that President Donald Trump improperly applied the Emergency Economic Powers Act to impose broad tariffs.

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

6-3 ruling against unilateral imposition of tariffs without congressional approval labelled a ‘disgrace’ by Trump

Top US court says Trump did not have authority to enact tariffs under law meant for national emergencies.

Supreme Court blocks Trump's emergency tariffs, but he plans to invoke other laws to maintain and raise tariffs.

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

The six justices who voted against the tariffs, dealing a major blow to his signature economic policy, should be "absolutely ashamed", Trump said.

Some countries welcome the ruling, while others review trade deals and economic effect.

The conservative-heavy court had largely given Trump everything he desired – until now, when two of his three nominees turned his back on him

What's far less certain is the longer-reaching impacts as the economy and markets again adjust to a changing landscape.