Economy Economist David Rosenberg on Trump admin: 'These people don't understand what a tariff is' 8 months ago Financenews Bay street veteran and economist David Rosenberg says Trump’s latest tariffs will backfire on the U.S. as he predicts the loss on … Post navigation Previous THE CRYPTO CRASH IS OVER SOON! [BREAKOUT INCOMING]Next Markets sink over US tariffs and recession fears | The Business | ABC News