Corzine idea

I was just watching Jon Corzine on the Daily Show and I got to thinking about an idea for a research paper. It would be interesting to trace the major Cabinet secretaries (like Defense, Treasury, etc) back to Wall Street. It would be interesting to look at their political ideologies and see how Wall Street has or hasn't influenced them generally over time and was there any bias to a certain political party (or ideology, since the parties have changed)?