“… California workers already are eligible for Social Security. That system’s a mess, of course, but it won’t become any less messy by having the California government create its own facsimile of it. … Meanwhile, the state’s own public-sector retirement system is reaching crisis levels. What can go wrong by inserting the state into the management of retirement plans for California’s private workforce even as its own government-managed plans amass hundreds of billions of dollars in public debt?”