A century ago, many new immigrants to the United States ended up returning home. And it often took a while for those who stayed to learn English and integrate into American society.
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Immigrants from El Salvador, including one who says she is seven months pregnant, stand next to a U.S. Border Patrol truck after they turned themselves in to border agents on Dec. 7, 2015, near Rio Grande City, Texas.
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The family of Kate Steinle is suing San Francisco and two federal agencies over her killing last year. In this 2015 photo are Brad Steinle, Liz Sullivan and Jim Steinle, her brother, mother and father.
A groups visits Sazon Latino, a restaurant in downtown Hazleton, during the town's September First Friday event, when businesses and restaurants stay open late. That month, the event included a restaurant tour featuring many Dominican restaurants and Mexican bodegas.
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Boys wait in line to make a phone call at the U.S. Customs and Border Protection Nogales Placement Center in Arizona in June. Many of the minors who arrived from Central America last year are now awaiting court hearings to determine if they can stay in the U.S.
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Cuban migrants in the waters south of Key West, Fla., on Jan. 1, before being repatriated. The number of Cubans trying to reach the U.S. illegally by sea has surged since the Obama administration announced plans to normalize relations with Cuba.
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French riot policemen force out migrants who were hidden in a truck that was making its way to the ferry terminal in Calais in western France on Wednesday. The cross-Channel port has become the last barrier for economic and political migrants trying to enter Britain illegally.
A slide of migratory flows in the Mediterranean Sea from the Mare Nostrum operation is displayed in the control room of the Italian operation, which tracks and intercepts migrant ships en route to Europe.