If you buy a safe and put all your savings in it, the government could confiscate it just because they consider large quantities of cash to be evidence of criminal acts.
Your assets - and your physical person - are the property of the Federal Government.
Many, many Republicans have voted for legislation upholding this concept, FATCA being the most egregious example, so don't look for help from them.
Under the existing system there is no way to protect anything you own from government confiscation, even your labor, if the government decides they are determined to have it. The only temporary respite lies in relative anonymity, but new mega-databases are breaching even that thin defense.
But history also teaches us that even the strongest systems come and go, in time. They'll turn on and destroy each other, as Rand showed in Atlas Shrugged, long before they will be able to bring their totalitarian Utopia into being.
If you buy a safe, and put your money it in, Obama stole over 30% so far by printing the value of the money in it away.
Pay off your morgage and all debts, that is money well invested.
Precious metals?
Ain't happening.