Olympics won't add a sport unless it's competitive and played globally.
(See dropping Women's softball)
(Yet see..WTF! all those Norwegian weird cross-country events that - it's cool if only 4 countries take it seriously.)
And see World Championships in American Football - where people like Dan Hawkins' son lead a US team of NFL rejects in blowout victories over Japan and Canada.
So - no.
American football - will never ever ever ever ever be an Olympic sport because there won't ever be 10 countries playing it at an NFL level.
Let alone a Division I collegiate level.
This post was edited on 2/21 at 11:10 pm