Anybody else completely lost on this? There's really no explanation in the link. I read the whole thing and have no idea why he's resigning, or even who he is

Anybody else completely lost on this? There's really no explanation in the link. I read the whole thing and have no idea why he's resigning, or even who he is or why I should care. "Being President was a full time job in DC..." made me chuckle, though.