Regardless, global warming will impact poorer (and tropical) countries disproportionately. I live in the Pacific Northwest, and I know it is a pretty good place to be as it warms up. Bangladesh, less so.
You can't expect Bangladesh to lead the decarbonation of industrial production - but the US can, and there are good arguments that it will yield an increase in wealth and standards of living.
It is the poor who will be least able to protect themselves from this destabilization. Not just because poorer/tropical countries will be disproportionately effected, but it's because it's the rich (globally or locally) who have the resources to protect themselves. With technology, with mobility, with "security".
Some who are now rich (globally or locally) will also find themselves less so.
When I see the standard the U.S. is setting for how refugees are treated, I'm terrified, even on just a self-interested level. Many more of us will be refugees in the future.