How come Sarah Palin wasn't invited to Billy Graham's birthday party?

This sounds more like a eulogy than a birthday greeting.  Note the green leaves outside.  Billy was having some health issues this past year and word was he was in his final days but he recovered.

Note how the bible is brand new, you can tell by how the gold is still shiny on the pages and the cover looks new.

So how come the Grahams didn't invite Sarah and Todd to Billy's birthday party?  They were afraid it would turn into a brawl!