That is also wrong, US interests change all the time, that is why friends become enemies.
That's exactly what he said.
The consensus seems to be that the US doesn't treat Canada as a friend, when they insult the PM (regardless of what opinion we should have on him), and slaps import tariffs to teach us a lesson. In turn, Canada's foreign policy seems to be, without question, to presume that the US is our greatest friend. We look like some lackey running behind the bully.
So why is Canada ruining its trade relations with China because we unquestionably do the US's dirty work while they treat us like shit, or rather, no compensating benefit from the US for screwing up our trade with China?
Canada's diplomacy is certainly immature when it fails to heed the advice of quite a few past statesmen:
That States don't have friends; they have interests (Churchill, DeGaulle)
That countries have no permanent friends, nor permanent enemies, just permanent interests (Palmerston, Kissinger)
That's what you get for appointing cabinet members based on their XX chomosomes, in a diminishing gene pool. Elevating people to their highest level of incompetence.