You do not understand FEMA’s mandate.
FEMA never takes the lead, but is there to supplement state and local emergency management.
FEMA is there to coordinate with those local resources and to provide the extra manpower, equipment and supplies in accordance with the state/local disaster relief plans.
The FACT is that Louisiana and New Orleans were mismanaged by Democrats. Their disaster planning was non-existent and the results speak for themselves.
The media and DNC were dishonest brokers in all this (big surprise) and Bush was a ball-less wonder on defense.
Puerto Rico was the same way. Trump just did not let the media command the dishonest narrative and allow the Democrats in PR to steal everything we supplied.
Point to me the section of the Constitution that authorizes FEMA.