Today’s volume of immigrants is in some ways a return to America’s past.
The Pew Research Center design staff picks the data visualizations we created in 2014 that they considered the most challenging and explains the approach to presenting our data.
A sharp rise in the number of immigrants living in the U.S. in recent decades serves as a backdrop for the debate in Congress over the nation’s immigration policies. In 1990, the U.S. had 19.8 million immigrants. That number rose to a record 40.7 million immigrants in 2012, among them 11.7 million unauthorized immigrants.