Bob Corker likes Standard & Poor's newly negative outlook on Bank of America and Citigroup, which is based on analysts' doubt that the government will provide more support should the banks hit more trouble.

This mentality is far better than investors assuming that Congress will be there as a backstop if they experience trouble, and it’s also better than Congress making arbitrary decisions regarding the size and scope of financial institutions. Obviously we wish no harm to these companies or their employees, but this is how a healthy system must work.