While 67% of lawful immigrants eligible for naturalization had applied for and obtained U.S. citizenship by 2015, this share was only 42% among Mexicans.
Between 2009 and 2014, about 140,000 more Mexican immigrants have returned to Mexico from the U.S. than have migrated here, citing family reunification as the main reason for leaving.
Overview Nearly two-thirds of the 5.4 million legal immigrants from Mexico who are eligible to become citizens of the United States have not yet taken that step. Their rate of naturalization—36%—is only half that of legal immigrants from all other countries combined, according to an analysis of Census Bureau data by the Pew Hispanic Center, […]
The proportion of all legal foreign-born residents who have become naturalized U.S. citizens rose to 52% in 2005, the highest level in a quarter of a century and a 15 percentage point increase since 1990.