A sudden influx of Guatemalan families into Arizona has overwhelmed detention facilities there and forced the government to release hundreds of parents and children over the past several days, U.S. Immigration and Customs Enforcement said Tuesday...Large groups of 100 or more have been turning themselves in to agents and requesting humanitarian refuge. “We are seeing record numbers of family units coming across,” said one Department of Homeland Security official, speaking on the condition of anonymity to discuss the trend. The department has not published border arrest totals for September, but the number of parents who arrived with children is expected...