Check out “MyIRA”
That's MyRA, not MyIRA: https://myra.treasury.gov/
It's nothing more than a low-cost alternative for people that don't have access to a 401(k) at work.
The investment option (US Treasury Bonds) isn't great, but it's better than a deposit savings account. And, after 30 years, or reaching a balance of $15,000, it's converted to a Roth IRA account, where the holder can invest in anything. Or, the holder can convert it to a Roth IRA at any time.
So, tell me: how exactly is this "confiscation"? If I had been able to do this with my Social Security contributions, I'd have about $1,000,000 today, tax-free. That's not a rough estimate: I've actually done the calculations, using the average annual rate of return by long-term US Treasury Bonds each year and reinvesting dividends along with my contributions.