She's from Ireland, and you two are pretty much alone in the wilderness on this. I've sent the photo by itself to many people without the added humor and just like on the thread here 90% say "not appropriate" in American culture. And we all know what that means. The grown daughter is in what would be a position of sexual tension. In Ireland that may not be the case. Hey, some cultures see no problem with two hetero men holding hands and kissing on the lips as a greeting. But that's them.
When a politician puts out images to tell a story about his loving sexiness and screws it up, he should be prepared for jokes. Same with Angelina Jolie and her "innocent" brotherly love in the public eye. Everything may be completely on the up and up with all involved, but we have every right to comment on the sexual messages that are being sent relative to our cultural norms. If you don't understand it, that's OK with me. Just understand that you may not be as perceptive of the appropriateness of sexual messages as others. And once again, nobody is alleging anything sexual is actually in fact going on with the Jolies or the Gores...it's probably just french kissing ;) Sorry, I know you don't laugh -- that joke was for others.