If you look at Kennedy's actions in the past it is easy to see he fits the old description of bipolar: Manic Depressive.
His shoving of the Airport Screener some time ago seems like a Manic Episode.
That being said, it's obvious why he is going into rehab. He got caught. He should still be procecuted as well as the officers that new he was drunk and gave him a pass.
Yes, and I wonder if he still takes his meds. Meds for bi-polar are aweful.
Also, I wonder if he has had suicide attempts. They are very common in bi-polar folks.