One of the striking aspects of spending four months in San Antonio, Texas, is the very Hispanic/Mexican feel of the city as well as the way it manages its social challenges, just as homelessness, poverty and more recently, the daily appearance (at its bus stations and airport) of Central American migrants who have been released “on cognizance’’ from nearby border detention centers. These people are often deposited at transport centers with little more than their children, the clothes they are wearing, and – if they are lucky – a paid Greyhound ticket to the destination of the relatives who have sponsored them, and in whose city they will have to appear for a definitive court ruling on their future.