I'm guessing US will be fuming about this.

One not-so-fun fact is that when the US sanctions anyone, their ability to transfer and use money via Visa etc. is taken away. In the modern world, being cut away from even using your debit card is a huge, massive hassle.

It is one of the many different ways being sanctioned makes life more difficult. I can't imagine the US being too keen on giving up those powers.