Replacement Migration: Is It a Solution to Declining and Ageing Populations?
United Nations projections indicate that over the next 50 years, the populations of virtually all countries of Europe as well as Japan will face population decline and population ageing. The new challenges of declining and ageing populations will require comprehensive reassessments of many established policies and programmes, including those relating to international migration.
Focusing on these two striking and critical population trends, the report considers replacement migration for eight low-fertility countries (France, Germany, Italy, Japan, Republic of Korea, Russian Federation, United Kingdom and United States) and two regions (Europe and the European Union). Replacement migration refers to the international migration that a country would need to offset population decline and population ageing resulting from low fertility and mortality rates. "
https://www.un.org/en/development/desa/population/publications/ageing/replacement-migration.asp
Beginning in 2004, the European Union has granted EU citizens a freedom of movement and residence within the EU, and the term "immigrant" has since been used to refer to non EU citizens, meaning that EU citizens are not to be defined as immigrants within the EU territory. The European commission defines "immigration" as the action by which a person from a non-EU country establishes his or her usual residence in the territory of an EU country for a period that is, or is expected to be, at least twelve months. Between 2010 and 2013, around 1.4 million non-EU nationals, excluding asylum seekers and refugees, immigrated into the EU each year using regular means, with a slight decrease since 2010.[2]
In 2015 the number of asylum seekers arriving from outside Europe increased substantially during the European migrant crisis (see timeline). In 2017, approximately 825,000 persons acquired citizenship of a member state of the European Union, down from 995,000 in 2016.[3] The largest groups were nationals of Morocco, Albania, India, Turkey and Pakistan.[4] 2.4 million non-EU migrants entered the EU in 2017.[5][6]
https://en.wikipedia.org/wiki/Immigration_to_Europe
I don't think this trend can be stopped by tRump or his brown shirt criminals against humanity as this trend has been in motion for decades:
US white population declines and Generation ‘Z-Plus’ is minority white, census shows
The U.S. Census Bureau’s release of race and age statistics for 2017 points to two noteworthy milestones about the nation’s increasingly aging white and growing diverse population. First, for the first time since the Census Bureau has released these annual statistics, they show an absolute decline in the nation’s white non-Hispanic population—accelerating a phenomenon that was not projected to occur until the next decade.
Author
Second, the new numbers show that for the first time there are more children who are minorities than who are white, at every age from zero to nine. This means we are on the cusp of seeing the first minority white generation, born in 2007 and later, which perhaps we can dub Generation “Z-Plus.”
https://www.brookings.edu/blog/the-...ration-z-plus-is-minority-white-census-shows/