“…The phenomenon of population aging has been recognized for many years by demographers, economists, and others and there has been a variety of approaches used to assess the possible role of immigration as an instrument to offset its negative effects. Attention has been given by various authors to population size and age distribution (Bijak et al, 2007(Bijak et al, , 2008Loichinger, 2015;Mamolo and Scherbov, 2009;United Nations, 2013), the overall level of economic activity and standard of living (Barrell, Fitzgerald, and Riley, 2010;Denton and Spencer, 2000;Kahanec and Zimmerman, 2008;Lee and Mason, 2011;Masson and Tryon, 1990), the fiscal positions of governments (Auerbach and Oreopoulos, 2000;Bonin et al, 2000;Dustmann et al, 2010;Lee and Miller, 2000;Rowthorn, 2008;Storesletten, 2000), and more particularly to the sustainability of publicly financed pension and health care programs (Alonso, 2009;Anderson and Hussey, 2000;Scherbov et al, 2014). Others have been concerned with possible undesirable effects of immigration on the incomes and employment of the domestic population (Borjas, 2003;Brücker and Jahn, 2009;Card, 2009Card, , 2012Dustmann et al, 2005Dustmann et al, , 2013Friedberg and Hunt, 1995;Jean and Jiménez, 2010;Longhi et al, 2005;Okkerse, 2008;Ottaviano and Peri, 2007;Peri, 2012;Ruhs and Vargas-Silva, 2014) and on the distribution of government transfer payments as between immigrants and non-immigrants (Blanchflower and Shadforth, 2009;Kerr and Kerr, 2011).…”