Louisiana recently passed a law that bans the use of cash in second hand transactions. I haven’t read the law, but according to this article, “those who buy and sell second hand goods cannot use cash to make those transactions.” They say that the reason behind this is to be able to track purchases and trace stolen goods. As you know, thieves always use cash. But, this doesn’t mean that everyone who uses cash is a thief. But, their purchases will have to be tracked now, too. So much for privacy.
I don’t know much about economics, but when the paper that the government says is “money” is no longer able to be used as such, we have problems.