CAN IMMIGRANTS SAVE THE WELFARE STATE IN RICH COUNTRIES?

Immigration has replaced natural population change as a source of growth in the working age population in many OECD countries. What role can it have in helping population dynamics, productivity growth and tax revenues, and in addressing the demands of aging economies (health care and personal services)? While the economics of it seems promising, will policies follow? And will an aging population accept immigration as a solution to the welfare problem?