Who shall decide how many people in the island?

The govt has decided that 6m is what our population should be. Does the govt think it should consult or ask the people if this is what the people want? We have a Natcon going on, should this issue be in the con for the people to tell the govt what they really want?

When the people elected a govt, does it mean that it also gives up its right to decide on the issue of the size of the population?