U.N. Criticizes U.S. Discrimination toward Black Katrina Victims Government policies at all levels have effectively barred low-income residents from returning to New Orleans; the city's homeless population has doubled since the hurricane. Residents are still facing the impending demolition of low-income public housing, rent hikes, and, most recently, dangerous levels of formaldehyde in the temporary housing trailers provided by the Federal Emergency Management Agency (FEMA).