Only once the US government shows signs of collapsing which won't happen right away. In fact rising US stocks (and likely other asset prices, except maybe bonds) will boost capital gains tax collections, especially once the retail investors jumps on board, incomes will grow as the asset bubble drives jobs (and regular income tax collections), and the government will initially look to be in better shape than ever.

The problems in the emerging markets will be blamed on low productivity, corruption, speculative excesses, etc. (which has some basis in fact which is what makes it plausible), just as we have seen in the Euro zone.

Only later is it plausible that the government will look to be in trouble and gold (and maybe Bitcoin) will get a bid.