Six months after Donald Trump introduced the first US tariffs, companies have started to feel the effects of a shock whose repercussions, though they have been contained for now, are likely to be long-lasting.

Six months after Donald Trump introduced the first US tariffs, companies have started to feel the effects of a shock whose repercussions, though they have been contained for now,…

Businesses both small and large are already reckoning with Trump's tariffs, and new levies are set to start this week.