New CIS report on unprecedented immigration levels Steven Camarota, The CIS found largest increase in immigrants New CIS report on unprecedented immigration levels New CIS report on unprecedented immigration levels New CIS report on unprecedented immigration levels analysis by the Center for Immigration Studies CIS study revealed “U.S. Immigrant Population Hit Record 43.7 Million in 2016,” conducted CIS “U.S. Immigrant Population Hit Record 43.7 Million in 2016,” a new report. Steven Camarota, “U.S. Immigrant Population Hit Record 43.7 Million in 2016,” Center for Immigration Studies. Steven Camarota, conducted a new report. a new report. a new report. the report Monday-published study conducted The CIS found