45%

of the foreign-born U.S. population are naturalized U.S. citizens, as of 2017

Source: Pew Research Center
Additional Information: Legal permanent residents account for 27 percent, and 23 percent are unauthorized immigrants.
Reference: For more information, read the 2019 Pew Research Center analysis, "Key Findings About U.S. Immigrants." "Key Findings About U.S. Immigrants."

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