> (Immigration isn’t the answer, their fertility rate also gets depressed just like the native population. All it achieves is to balance the birth/death rate on

> (Immigration isn’t the answer, their fertility rate also gets depressed just like the native population. All it achieves is to balance the birth/death rate on paper for the year.) If fertility rate gets depressed then just keep letting in more people. I don't see how it isn't the answer if your objective is to keep the population at a stable level.