US President Donald Trump endorsed calls today for a boycott of tariff-hit Harley-Davidson over its plans to move production of its iconic American motorcycles out of the country. "Many @harleydavidson owners plan to boycott the company if manufacturing moves overseas. Great!" Trump tweeted.

"Most other companies are coming in our direction, including Harley competitors. A really bad move!" Trump has taken it personally since Wisconsin-based manufacturer -- once a presidential favorite -- announced on Monday it is moving some production out of the US. Harley-Davidson was targeted with EU tariffs after Trump imposed stiff duties on European steel and aluminum.