Interesting questions cfljmljfl. Over the last few years we've heard rumors of what congress might do, and sometimes it sounds like some congressmen are interested in revoking the GSEs' charters. To us GSE longs that always sounds bad.
But now I am imagining that if congress revoked the charters, then the GSEs would be free to expand their services and operations. It's interesting to think of what they might decide to do or would be capable of doing without the charters' restrictions. So I no longer fear revocation of the charters, per se. But of course we'd still need to be released and recapitalized before I stop worrying!