Where and how people get their money is important to me. It reveals their connection to special interest groups, vested interests, issues of self serving financial decisions, etc., as well as whether or not they even pay taxes (and if so, at what rate - what is written off, capital losses etc.). Other presidents have been doing this and I think it is a good idea. Instead of custom (depending on the attributes of civility, openness, and honesty, which we don't have now), it should be a matter of law. We obviously can't count on a tradition of people doing these things anymore.