If I can respond in a general way first, the question you pose is a very good one, because you're right: that is a question that is in the minds of many people, and sometimes they articulate it, and sometimes they do not.
Perhaps one model you could follow is to remind people of what happened when our grandparents came to this country. My ethnic background is Italian. In 1905, when my grandfather came to work on the railway, I expect that there were some people here who held views that weren't consistent with opening our arms to people to come to Canada. The Canadian government at the time, and the Canadian people broadly, wanted to do the right thing, which was to have a respectful country in which all were welcomed in appropriate circumstances.
I would say to you that perhaps you might consider, if you get those questions from your constituents, having them think about their own family backgrounds: the Ukrainians coming to Saskatchewan, the Italians coming to Thunder Bay. This country is full of examples of when leaning too far in the other direction didn't achieve anyone's best results.