You can still buy all the gold coins, foreign money and so on you want; they are just not legal tender. I am pretty sure the government can access to my bank s

You can still buy all the gold coins, foreign money and so on you want; they are just not legal tender. I am pretty sure the government can access to my bank statements at will. This setup will make it much more explicit what is (already) going on. Oversight would of course be needed.