What laws would be broken if you flashed the President for a million bucks?

As you may have read, a British billionaire who runs a site called Battlecam, which is sort of an “upload your own jackass-like stunt” website, has put out an offer to pay $1 million to anyone who successfully disrobes in front of Barack Obama, with the word “Battlecam” written on their chest, while yelling the word “Battlecam”, if they can successfully get the stunt filmed and uploaded onto the website. So, what laws (besides indecent exposure), if any, would a person both daring and resourceful enough to succeed at this mission be breaking?

For example, say the person wrote Battlecam on their chest, put on some clothing that was easy to get out of, and enlisted a friend with a video camera to accompany him/her to a public speech given by Obama. Certainly the Secret Service would tackle the naked person pretty quickly, but what would they charge the person with? What could they charge the person with? And what, if anything, could the prankster who is paying the million dollars be charged with? Would it be a different answer if he weren’t a resident of another country? How do you think Obama would react? And finally, would you do it?