There is a lot of shame in losing to Trump.
He's effectively proving you've wasted your career, all you know about politics is wrong. He's spent his whole life doing it one way then the Donald comes along and just pisses all over it. He's worked to become president of the United States, now he's being destroyed.
He's probably got all kinds of strings to pull, all kinds of dirty connections, favors owed in high places. And it's all being rendered useless.
But then, all the money he's taken, all the favors he's owed. This guy is completely under control. Probably has dire consequences for him to endorse.