Yeah there is something more serious going on than typical depression, it is depression caused by a stroke. While he is able to function as a normal person there are physical effects of that that changes who you are and what you can do. That's a big fucking change. Also the damage from a stroke may directly be the cause for depression. All of which he is seeking and obtaining treatment for. Which is something that if your insurance covers it should be considered normal. And it can happen to anybody. This man happens to be a senator. That doesn't mean he shouldn't seek treatment for either a condition exacerbated by a stroke or directly caused by a stroke.