Donald Trump observed blithely last week that if his cherished tariff regime is struck down by the US supreme court, he may need to “unwind” some of the trade deals struck since he declared “liberation day” in April.
It was a reminder, as if it were needed, that nothing about Trump’s economic policy is set in stone. Not only does the ageing president alter his demands on a whim, but it is unclear to what extent he has the power to make them stick.
