HIALEAH, Florida -- In the past 18 months, an estimated 250,000 migrants and asylum-seekers have arrived in the Miami area after being granted only precarious legal status that often doesn't include permission to work, which is essential to building new lives in the U.S. This influx is maxing out the migrant social safety net in Miami's faith communities, long accustomed to integrating those escaping political persecution, a lack of freedoms and a dearth of basic necessities.