The stark difference in tone. Trump turns it into a state of emergency. Trudeau addresses it as a problem worthy of resolution. His approach avoids screeching histrionics.
As I said years ago, and as is equally evident in the U.K., Germany, France, Sweden, Austria, the Netherlands, Belgium and elsewhere outside the U.S., there is no such thing as "multiculturalism", there is only the transition period as a nation transforms and is overwhelmed by another culture.
I have lived in a monogamous culture (Japan) and I think it is the poorer for it. I had an argument in Japan with a white girl from Minnesota ("Land of 1000 Lakes!") who described the US as a "salad bowl", not a "melting pot". I don't understand how that came to be.
Australia is firmly committed to multiculturalism. We definitely have cultural enclaves here as people integrate. But amongst my Australian friends on Facebook, I have a Singaporean Chinese who married an Aussie; an ex-British Army officer who is of Iranian decent and speaks English, Farsi and Arabic and who married an Aussie who did not convert to Islam; a Muslim Palestinian who married an Aussie (he is Greek Orthodox and did not convert: they told their parents to mind their own business when it came to religious instruction of their children); a Sri Lankan Malay who married a fellow Malaysian but whose children have broad Australian accents; a Chinese accountant brought up in Australia who married an Aussie; a Chinese Malaysian who married an Aussie doctor, two South Africans who met here and are planning children in Australia; and so on...
Each of these people have managed to hang onto their cultural backgrounds, but they have transitioned to being Australian at the same time. Some are not Christian and some speak foreign languages at home. Most of them directly integrated through marriage. It is hard for someone who is half-Chinese, plays cricket and supports the Collingwood Magpies in the Australian Football League to be the subject of abuse for non-integration, other abuse of course as a supporter of the Magpies (who are mongrel dogs). I suppose it is worth noting that each of these people are tertiary educated, and I'll return to that, and that in many cases their parents were running away from some bad shit in their home countries and were grateful for a place to raise kids in peace and tolerance.
I have in earlier times never supported compulsory English as a prerequisite to citizenship as there have been many people who have contributed to Australian societal and business success as non-English speaking immigrants.
Also it is hypocritical - I lived in Hong Kong and speak ten words of Cantonese. Yet I paid taxes, gave to charity, caused no civil unrest, and contributed to the profitability of the businesses for whom I worked.
As I get older however I have swung more to the view that English is important to cultural assimilation, especially amongst people who are likely to be disadvantaged in getting jobs.
But in the same breath I also think that free tertiary education (of which I am a beneficiary - my parents were both poor and free university has led to my personal success) should be mandatory for immigrants so as to imprint the importance of free thinking, cultural tolerance, and democracy.
Samuel Huntington (you'll like his book, Pariah, "The Clash of Civilisations and the Re-Making of the World Order", as it will reinforce your world view) notes that it is not first generation immigrants who cause trouble, but second and third generation immigrants who find themselves unable to assimilate and turn back to the morals of their parents or grandparents' homelands in order to understand their own identity. That's where you run into trouble, as most clearly seen in France. Let in tens of thousands of people, but they have to not be stuck in bleak concrete high rises with no hope because of stratification of opportunity.
