Tax reform is apparently so treacherous for senators these days that they require the utmost protection from the public -- half a century's worth. The leaders of the Senate Finance Committee last month asked senators to submit written proposals detailing tax breaks they'd like to see preserved once the tax code is reformed and explain why. The point was to help inform committee leaders in their efforts to craft a tax reform bill. The request apparently wasn't embraced, and the committee has now promised skittish senators that their proposals will be kept secret for 50 years. A memo sent out...