57 million in 2015 Pew Research Pew Research Center driven by immigration Pew Research Center mainly because of immigration mainly because of immigration projections mainly because of immigration mainly because of immigration PEW-tutkimuslaitos on arvioinut trend for illegal immigration looks very different Pew Research Center http://www.pewhispanic.org/2015/09/2...lation-change/ immigrants have almost tripled driven by immigration Pew Research Center The answer is simply immigration minority-majority nation driven by immigration Immigration's Impact says Pew Research Center report http://www.pewhispanic.org/2015/09/2...lation-change/ Pew Research Center analysis of census data. Pew Research Center Pew Research Center Pew Research Center experts predict projections Pew Research Center