That's a good point. The super rich make most of their money via capital gains. Buffet makes 100k in salary but huge bucks in CapGains. That's how he was able to say he pays less income taxes than his secretary a few years ago for the Obama campaign.
For general knowledge and amusement. See Al Gore on SS in the 2000 election. He borrowed the idea from a young Paul Ryan but it was interesting to see this open discussion of ideas in the campaign. A much higher attention to detail and subject than we get now...