Let me put it to you this way.
If you pull the tax differed status of the 401K, how many employers will keep the program?
And it won't be a voluntary roll over for long. Da State wants that money.
Employers pay big fees to have a 401k plan. If employees leave in droves... employers discontinue the plans. Why would ANYONE put post-tax dollars into a plan that will be nationalized? That would be stupid. Oh, wait... I forgot 53% of American voters just elected a communist. They ARE stupid!