Yes he is. You can look up "Dreams From My Father...", "The audacity of Hope...", and "Of Thee I Sing...". The titles are longer but I abbreviated a bit.
for being the president
He is a published author.
Nope
the average age for a published author is eleven or older
Yes.Malia Ann Obama and NaTasha (Sasha) Obama.
Posthumous Book- A book published after the authour's death.
"The Pearl" is a novel published in 1947. John Steinbeck is the author.
He is a published author.
no
Barack Obama Sr. and Ann Dunham, a Kenyan and a Kansas-native, respectively.
"Swindle" by Gordon Korman was published on June 21, 2008.
The Bible is the most published book in the world.