NGO shelters along US-Mexico border, which have long provided aid, rattled by letter from FemaThe Trump administration has continued releasing people charged with being in the country illegally to non-governmental shelters along the US-Mexico border after previously telling those same organizations that providing immigrants with temporary housing and other aid may violate a law used to prosecute smugglers.Border shelters, which have long provided lodging and meals before offering transportation to the nearest bus station or airport, were rattled by a letter from the Federal Emergency Management Agency (Fema) that raised “significant concerns” about potentially illegal activity and demanded detailed information