(Edit: I am an immigrant. And of course immigrant lives matter. All human lives matter)
The poor have only their labor to trade with. systematically discriminating where they can work, destroys their lives just as much as slavery can. It's stolen wages.
I'm not sure what you mean. If you cannot leave your country (because of your country policies) that's a problem, I agree. If you cannot enter, say, the US, you still have a lot of other countries where you can try to immigrate to.
Btw, when I use the word "immigrant" I mean "come to live in a foreign country". I'm pretty sure you are using a different meaning (maybe "refugee"?), could you clarify?
In fact that's what we all trade when we move to a foreign country. The general rules are to have enough work experience in your field or a degree, and you will need a proof that you're going to work or study. That applies to everybody.
> destroys their lives just as much as slavery can.
Ok, I don't know what to say. That's just purely disingenuous.