There's many reasons there is a distrust in science in America. It's not all because of ignorance, some of it is justified. First reason is that the American government is basically an evil empire, and it's constantly lying to its own people, and the rest of the world, so they have very little credibility with anybody. Even when they are telling the truth nobody believes them. Since even science can be manipulated by this government to fit its own agenda.
It has resulted in even science becoming politically-biased. There is now such a thing as "right-wing science" and "left-wing science". For example, talking about Covid vaccines is "left-wing", while talking about anti-viral drugs is "right-wing". Since Canada is so heavily influenced by the Americans, lots of cultural links between Canadian and American people, and since the Canadian government is basically a client state of the USA, similar though much smaller amounts of distrust in Canadian institutions result.