People are not resources. They aren't being "taken", unless you're talking about literal kidnapping and forced labor here (which, I believe, last time happened during Operation Paperclip, if we're talking about US). They come to US, because they believe it is a better place for them. If they wanted to "help elevate their own countries", they'd stay there. Coercing them to do so (including indirectly by depriving them of the opportunity to make that choice in the first place) is unethical.

Speaking as an immigrant myself, I don't believe my country wants me. It might want my skills and abilities, sure, but it seems to strongly dislike my liberal political views, and they can't have one without the other. So they get neither.

Yeah, to me it just seems like another way an unbalanced economy slides into alignment with the power rule of 20% of the world's population containing 80% of the wealth. It's not healthy to base your immigration policies on how financially well-off and easily gentrified each applicant is. Not healthy for anyone but the financial elite.

The problem their own countries dont want to utilize their skills so those people seek a better future somewhere else.

And how do you break that cycle?

If I had that answer I probably would have been a political leader bringing change.