The scrutiny on the agency comes as President Donald Trump has repeatedly questioned the necessity of FEMA and called for states to take a greater role in disaster response.

The head of FEMA's Urban Search and Rescue branch, Ken Pagurek, has resigned due to frustration over the agency's response to the flooding in Central Texas, sources say.

Ken Pagurek, a longtime Philadelphia firefighter who served as chief of FEMA’s search and rescue branch for the past year, was well-versed in major disaster response.