Enough talk about religion, a friend of mine has brilliant idea: What about a mutual fund of US stocks whose portfolio mirrors the investments of US Senators and Congressmen (or women). Has that been done? I think enough information to do this is publicly available in their disclosure statements.
"Never let the task you are trying to accomplish distract you from the study of computers."
In the US, the Center for Responsive Politics runs a web site about political money, especially campaign contributions. So a portfolio of companies who have a vested interest in a certain politican would be interesting.