More than 200,000 children from El Salvador, Guatemala, and Honduras came to the U.S. unaccompanied between 2014 and 2016. Allowed to enter the country while awaiting deportation proceedings or asylum decisions, many settled with relatives in parts of Suffolk County, Long Island. For The New Yorker, Jonathan Blitzer writes of the precarious course the children must walk — enduring threats of gang violence and a local power structure hostile to their existence.