First, we solve problem of paying the current beneficiaries of S.S. when the trust fund runs out of money in about 12 years. The options are:
- Do nothing and beneficiaries will be paid based on current payroll contributions which mean a 25% decrease in S.S. That of course is not going to happen.
- Increase retirement age.
- Increase S.S. payroll deductions
- Increase the income level subject S.S. payroll deductions. Just the first $137,700 of earned income is subject to S.S. payroll deductions
A combination options 2-4 seems very doable. Of course both parities will waste time with endless arguments; democrats are responsible because of enhancements to S.S. and democrats will argue that republicans are responsible because they refused to fund the enhancements. Eventually, they will reach an agreement because a 25% across board decrease ins S.S. would create serious political, economic, and social problems.
Once the S.S funding problem is solved, beneficiaries will be paid out of current S.S. payroll deductions and the remaining 25% will paid out of the mandatory spending section of budget. This would be the time for congress to consider other retirement plan options. One such option which I think you mentioned would be to transfer S.S payroll deductions to a new system as the cost of paying beneficiaries of old system declines. However such a system would have to be a safety net where workers are protected from risk; that is goverment absorbs losses in some way and the system is mandatory the same as S.S.