Most people care far more about the prices of things they purchase—food, housing, health care, and the like—than the price of gold. Not coincidentally, professional economists display a remarkably explicit consensus against forcing the central bank to adopt a policy that fixes the price of gold.

Yet, there are still powerful people who think that the United States would benefit if the central bank’s sole purpose were to restore a gold standard. With the nomination of gold standard advocate Judy Shelton to be a Governor of the Federal Reserve, we feel compelled to take these views seriously. So, here goes.

Several years ago, we emphasized that a gold standard is incredibly unstable. In this post, we address the mechanics of how the U.S. central bank would run the system. In our view, it is incumbent on any gold standard advocate to answer a series of practical questions: What gold price are they proposing? How much gold would the Federal Reserve have to acquire and hold to make the scheme credible? Will the Fed be able to lend to banks and operate as a lender of last resort?

Our answers highlight the operational challenges. Since the Fed initially would commit to holding a particular dollar value (that is, the product of price and quantity) of gold, we need to consider price and quantity together. With the smallest balance sheet we can imagine, our best guess is that the Fed initially would have to triple its gold holdings, driving the price of gold up by two thirds (to about $2,600 per ounce). Then, to maintain the gold standard, the Fed would still need to purchase one-third of world gold production each year. Without gold holdings over and above this minimum, the Fed would not be able to lend at all, much less without limit as it can under a pure fiat money standard….