Its hard for the WH to get a piece of the deal when its barter. VJ must be annoyed her Tehran friends are cutting them out.
The harm here is simple, as the demand for dollars drops, so does the value of the dollar in a free floating marketplace. As such, the price of imports rises which is directly felt on the inflation front. Want to see the budget deficits skyrocket further, watch when the interest rates also sky rocket to accommodate the declining dollar. The only “good” that will come from that is his royal eminence will be fully in the same league as Carter when he leaves office, hopefully on a rail.