Both true points. But what I think you may find is that many “lefties” support strong immigration enforcement, we’re just realistic about where we’re at, the fact that kicking 10 million people out of the country isn’t sound, and we can “fix” immigration without building an idiotic wall.
The “whiter” (less diverse) aspect is also unfortunate, and I should have mentioned that a nation at least welcoming of diversity and not fundamentally racist is a given, even if they are not as multicultural as the United States (almost nowhere is, frankly).