This is the first indication I've seen in the USA that the ruling capitalist class is beginning the process of converting to digital money which they control. They will know when, where, and what you spend money on. But far worse, the next time there is a financial bust by major banks, our masters will be able to simply take money out of your digital accounts to bailout the banks.
... as the WSJ report points out, consider that on every US bill the following words appear: “This note is legal tender for all debts, public and private.” However, currently there's no federal law stipulating that business have to accept cash when offered, though likely no body of lawmakers prior to the modern advent of payment by plastic could have ever envisioned such a dilemma as cash being banned by stores.While it could be true that "no body of lawmakers" could see this happening, it is very likely that our masters in the Deep State did. There has already been a test run in India where the government was induced by various agents of the US Empire to convert to the digitalization of money.