Donald Trump's cartoon-like chaos leaves US economy on unstable course

Ten days reporting from the US - in Pittsburgh, Washington DC, and just across the Potomac river in Arlington, Virginia - gave me a fascinating snapshot of what feels like the slow-motion unravelling of the world's largest economy. So many conversations featured uncertainty and wariness; and weariness, too, as businesses and consumers weigh up every decision, against the backdrop of the chaos emanating from the White House. Even the president himself conceded last week that the economy is in a "transition period", claiming he had warned of this during his campaign. (When challenged, the White House could not come up…