I don't understand the reaction here.
Deposit-taking banks should NOT be allowed to day trade or speculate with the money with Mom & Pop's checking account. If the government is going to backstop Goldman Sachs et al, then we have every right (and indeed the government has the duty) to restrict the leverage, risk etc. that Goldman is taking on. I would prefer that the backstop not exist at all, but it's what we have to work with.
It really seems like a no brainer, and while I'd personally like to see much deeper/more fundamental monetary and economic reform, Obama finally seems to be stumbling towards the right path and away from the Dark Side.
And BTW, Paul Volcker is behind this, and he's probably the only person in the Mainstream whose judgment I actually trust.