Trump tariff court ruling does little to end uncertainty for global business

British Chambers of Commerce official says US supreme court decision ‘does little to clear the murky waters’

• US politics – live updates

The US supreme court just declared Donald Trump’s boldest tariffs illegal, but international businesses and governments are still uncertain over what’s to come.

After the court said the president cannot enact tariffs in peacetime using the International Emergency Economic Powers Act (IEEPA), the White House said it will quickly replace the levies by other – but potentially more cumbersome – means.