I strongly disagree with the "wealth" statement. Several G7 countries are greatly in debt and live on bortowed time. Many cannot even finance all that would be necessary to achieve the 1.5°C target.
Yes, of course immigrants bring new skillsets to a country. The problem arises when they become too many; just ask any surviving indigenous people of the Americas. 😉
I completely agree with the uneven wealth-distribution problem, however. In particular, the earth...