The United Nations projects that over the next 50 years, the population in the industrialized world will (US-Europe-Japan) will DECLINE, not expand. The population is suffering from growing old and the youth are so burdened with taxes they are not getting married(marriages off by 50%) and are not having children. The decline in birth ratesand the migration of people from the outer regions into the old core is typical.
The UN is now supporting immigration to keep the pension funds alive. They have stated that immigration now “require[s] comprehensive reassessments of many established policies and programmes, including those relating to international migration.”