The entire world has been settled and resettled. You can't let past conquests stop you from having a country, laws and borders or all countrys would be illegitimate.
>The point is your parents, or their parents, were immigrants.
Or my parents, parents, parents, parents, parents, parents were... And if they came here for a better life, obviously there was some mind virus that was going on in their home country that forced them to leave in search of a better life. Don't try and bring that mind virus here if you had to immigrate here to escape it.
The US in particular has always been made up of immigrants. I don't know how it works for canada. But for the US, that's always been the case. We're a country by immigrants, for immigrants. An American identity is not one of skin color or race. To suggest otherwise is not just a ahistorical, it's anti-American.
There is no mind virus. People wish to rewrite history to fuel their own delusions. They don't require enforcement around immigration, they require medication and perhaps a history lesson or two.