As Donald Trump himself has often pointed out, equity investors have found plenty to like in the president's mix of tax cuts and de-regulation.
Now, a month on from the US stock market's correction, potential buyers of the recent weakness are having to rapidly calibrate the scale of the threat to economic growth and corporate profits posed by an escalation in global trade protectionism.
Less than 24 hours after Gary Cohn, the former Goldman Sachs executive and opponent of the tariffs planned by the White House, announced his plan to quit as Mr Trump's top economic adviser, the EU floated proposed duties on a range of US goods that could include Harley-Davidson motorcycles, Levi jeans and bourbon.
While rising trade tension have soured the broad backdrop, the reaction so far has been modest. The Canadian dollar and Mexico peso — currencies exposed to the potential collapse of the North American Free Trade Agreement — have weakened, as have the shares of major exporters such as Boeing and Caterpillar.
Global car markers and steel producers have also been sold by rattled investors.
The risk to corporate profits from a series of retaliatory tariffs imposed by the world's biggest economic powers is hard to estimate, but analysts say a weaker global economy, accompanied by more inflationary pressures, may well extend the correction that shook markets at the start of February.
"The important issue is whether or not Cohn's departure will mark a radical shift in US trade and economic policies," said Stephen Gallo, European head of foreign exchange strategy at the Bank of Montreal. "If it does, it could have massive implications for global growth."