I predict the exact moment the government starts confiscating these accounts for SS, there will be blood in the street, and violence not seen in this country since 1865.
The more likely issue is reducing the amount that can be put in the 401K and IRA but not the MyRa, which invests in government bonds.
A likely “solution” is the feds saying that to avoid uncertain market returns, X% of IRAs and 401Ks must be invested in government bonds. The percentage starts at 1% or 2% before ratcheting up.
Unfortunately indiscriminate and random blood in the streets is not going to solve the problem IMHO. A very focused and surgical strike is what is needed, along with a very few big name martyrs who are prominent as enemies of the Constitution and Republic that will get some peoples mind right and then immediately restore Constitutional governance declaring the 17 Amendment null and void and requesting state Legislatures who wish to be a part of the United states and adhere to the Constitution, choose their Senators, and we can get on with life in the Republic. Anything less will be business as usual.
The best we can hope for is a revival of the Constitutional spirit that inspired the Founding Fathers and avoid the bloodshed altogether. That certainly was not the case in their day.