Express your disagreement with the Canadian Prime Minister's behavior towards the US President and suggest that he should establish a better relationship for the benefit of Canada.
Being the little preening peacock that he is, Justin goes around making thinly veiled speeches taking pot shots at Trump.  That's dumb.  Regardless of whether you love or hate Trump, establishing some kind of working relationship with the President of the United States is critical to Canada. That's what a mature and responsible  Prime Minister of Canada would do.  Currently, we don't have one.