Trump Threatens Trade Measures on Europe if Canada’s Potential EU Associate Membership Done as a ‘Hostile Act’
European Commission President Ursula von der Leyen said on Sept. 16 that she would like Canada to become the EU's first 'associate member.'

TL;DR
- President Trump may impose tariffs on Europe or halt trade if Canada's potential EU associate membership is seen as a hostile act.
- The proposal for Canada to become an associate member of the EU was mentioned by European Commission President Ursula von der Leyen.
- Trump referred to Canada as a "terrible trade partner."