President Jimmy Carter founded the Federal Emergency Management Agency in 1979 by executive order; it remained an independent entity until after the 9/11 terrorist attacks, when it was absorbed by the newly created Department of Homeland Security. The department transferred staff, duties, funds and authority from FEMA to its Emergency Preparedness and Response Directorate.
By the time Hurricane Katrina hit the Gulf Coast in August 2005, FEMA was gutted (with 500 staff vacancies) and couldn’t properly respond. Reform legislation signed into law in 2006 “restored to FEMA many of the functions that had been transferred to other parts of the department” while restricting the actions that the DHS secretary can take affecting the agency.
FEMA‘s mission is to prepare for, respond to and aid recovery from natural and manmade disasters and terrorist attacks.