i'm not sure if this is about his presidency or not so ill cover both!
your going to have to do most of this on your own, considering opinions but
here are a few basic things to go over!
+Where was he born? And in what kind of living conditions? (good, bad ,poor, rich, ect.)
+What did he do when he was growing up? (charity, college degrees, ect.)
+What made him want to be a politician?
+How did his presidency effect the US? (Economy,Healthcare,ect.)
+What kind of impression did he leave on the US?
Hope i helped!