Heeeere ya go!
http://money.usnews.com/money/blogs/capital-commerce/2008/10/23/would-obama-dems-kill-401k-plans
I asked you for an actual proposal by an elected Democrat.
What you cited was a presentation by a loony consultant who claims to be a professor at a left wing university. Do a search on the school name and you’ll find that the place is a joke.
Come back when you have something substantive, like a bill introduced in Congress.