Well, SS reform is generally unpopular, largely because the left keeps lying about it and the right is inexplicably unable to call them on it.
The best solution for Socialist Security is to dismantle the whole thing. It's a fraudulent Ponzi scheme. Everyone should have the option of receiving a lump sum payment now. This would be the total of all employee and employer contributions plus interest since inception. Younger workers, those under 50, would most likely take the lump sum. Older workers and those already receiving benefits can stay in if they want, or take a lump sum, adjusted as needed for benefits already paid out. Stop all new participants and taxes now. In about 20 to 30 years it would die of natural causes. This whole process would add hundreds of billions of dollars to private capital markets, creating an economic boom and prosperity, the likes of which we have never seen.
Investing at 0 to 1% shuld be unpopular!