What a world, where this has to be fact checked.
http://www.snopes.com/barack-obama-katrina/
CLAIM
Barack Obama was president when Hurricane Katrina hit New Orleans in 2005.RATING
FALSEORIGIN
As damage from Hurricane Harvey continued to grow in Texas in late August 2017, some Twitter users sought to defend President Donald Trump’s response to the disaster by criticizing his predecessor, Barack Obama:
The argument that Obama did not do enough after Hurricane Katrina lashed New Orleans, however, ignores the fact that Obama was not president at the time. Katrina made landfall in August 2005, during George W. Bush’s presidency.