You conveniently forgot to mention $200 billion in unfunded retirement benefits.
And I am going to not so conveniently point out that the radioactive phrase "unfunded liabilities" is a financial myth because there is little to no difference between an unfunded liability and a funded one.
Know why?
Because as shown by the cliff we narrowly avoided falling off in 2008, the truth is, ANY "funded" liability can quickly turn into an "unfunded" one.
An economic crash, like the one we narrowly avoided in 2008, would have rendered the value of many assets ZERO or close to it.
And don't bother arguing that the value would recover, because in a crash, few people are in a position where they can just sit around and wait while the asset recovers its value. Once they've been wiped out, they remain wiped out.
Screeching about unfunded liabilities is a form of hysteria not unlike that other favorite shibboleth of the Right, "fear of creeping communism".
Even if Congress were to set aside tax revenues to fund Social Security, Medicare and every other 'liability,' that money would still need to be invested in some kind of assets and the winds of economic fate might render those assets to be worth much less when they're actually needed than when they were first invested.
I don't care if you're talking about stock General Motors, or Citicorp, money market mutual funds, or even bank deposits.
In the end it's the federal government that ultimately stands behind these assets.
And by the way, if you're going to screech hysterically about California's UNFUNDED LIABILITIES, just remember that California is contributing to federal coffers at a higher rate than most red states, so if you live in one of those states, YOUR OWN unfunded liabilities are probably going to be backed up by those commies who live in Commiefornia.
You're WELCOME.