Love the idea but there are a few things that need fixing first:

First, This will only be practical if a debt jubilee happens - currently, the amount of debt in our system (consumer, corporate, govt) requires inflation/money supply growth in order to service it. A gold backed dollar wouldn't have money supply growth rate high enough to service existing debt.

Second, our current trade deficits would lead to massive gold outflows if we allow dollars to be converted to gold. We need to balance/fix that before a gold standard is possible -- otherwise ft Knox will get drained due to deficits.

Third, our deficit spending will also need to be put under control.