WATCH: The history and legacy of birthright citizenship in the U.S.
The second-largest group, immigrants from India ... of Mexicans who returned home exceeded the number coming to the United States. This trend was especially pronounced among undocumented immigrants.
Immigrants to the U.S. increasingly arrive like these people, seeking asylum at a formal border crossing, rather than trying to sneak across the border. Carlos Moreno/NurPhoto via Getty Images ...