Halperin: Sanders Wants To Highlight that ‘Fat Cat Lobbyists Have Access’ to Clinton/DNC

"To me, the symbolism is what happens at the conventions normally. Fat cat lobbyists have access to politicians through contributions. That symbolism, that's the way the convention is going to be. And I think he wants to go to Philadelphia and highlight that relationship and all the other things he's been highlighting in a way that he can't do if he gives up in June."