AdvertisementWith Thousands Of Migrants Crossing The Border Daily, We Asked 'Why Now?'04:37Download AudioResumeMarch 21, 2019Joel RosefacebookEmailIrsi Castillo of Honduras holds her 3-year-old daughter just after crossing the Rio Grande into the U.S. at El Paso, Texas. Castillo is one in the surge of thousands of migrants claiming asylum at the U.S.-Mexico border. (NPR)