For the sake of argument, I'll ignore the fact that Congress can't legally give him a power that they don't legally have themselves. Undoubtedly Congress will ignore that fact, too, so it's alright.
Isn't that what caused most of the crisis in the first place? It's hardly the failure of the free market when government orders banks to make between 35 and 56 percent of their loans to people who can't afford loans. This is EXACTLY what Ayn Rand was talking about: regulation can trip businesses, giving the government the excuse to say the free market has failed and take greater control.