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.
Although Europe is struggling to manage the hundreds of thousands of refugees fleeing conflicts in the Middle East, Africa and elsewhere, the countries facing the biggest refugee impacts are the ones closest to the fighting.
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.