It doesn't work that way. You can narrow the range of possible authors down to a short list, but you'll never be able to publicly point the finger at someone an

It doesn't work that way. You can narrow the range of possible authors down to a short list, but you'll never be able to publicly point the finger at someone and say "It was you!". And even your short list will be highly debatable. The analysis could be conducted easily enough and someone could make a strong case for why they feel the conclusions are accurate, but it would be far from hard evidence. Such a thing wouldn't be admissible in court today, but eventually it could be accepted in the same way that handwriting analysis was. I really don't think this was written by an actual congressman. It seems like more of a political piece using the "confession" motif as a rhetorical device.