I don't know the answer to that, or about Roth 401(k) plans, but I think there are a lot of people overall with one or the other. I think that threatening either would have an effect similar to threats on Social Security, without the justification of it being insolvent.
IMO, at worst, Roth plans could get phased out for new contributions with existing deposits and the tax-free withdrawals honored.
IMO, at worst, Roth plans could get phased out for new contributions with existing deposits and the tax-free withdrawals honored.