The majority of illegals held after trying to enter Australia are not Indonesians, Thais or Vietnamese but Iraqis, Iranians, Sudanese and Libyans. Australia's uncompromising migrant policy sees them held in camps on Nauru and Manus. They will not get in.
Trump's measures, though they will result in many injustices for those who are true friends of America and who have the economic capacity to contribute, are no greater than the measures that Australia already has in place. Both nations now make it easier for the UK to make migration policy more targeted - excluding nationals of the 7 banned nations, but plus Pakistan and Bangladesh, from whence much of the UK terrorist threat comes.
The outcome is that Anglophone nations are now making the point that the world is not some free, open, ownerless place in which migrants hungry for wealth unavailable in their home countries can move freely en masse and without restriction . They are making the point that nations are already owned by the people that live in them and whose ancestors have fought, bled suffered and struggled to make them what they are. The message is 'Go and make your own'. The message is 'If we want you, we'll call'
The United Kingdom now has the opportunity to join two other great anchors of the Anglophone world. And despite Trudeau's words, migrants will find it a lot harder to get into Canada than they might imagine.