Venezuela produces heavy "sour" crude (this means high in sulfur). Many of the US refineries capable of handling sour crude have closed, partly because the sulfur content makes the refineries stink (and emit lots of pollution) and partly because they need more expensive piping to handle the corrosive materials (not just the crude, but HF acid that's used in the refining process).

The last refinery to be built in the US opened in the 1970s. Since then, refineries have closed. None of the owners of refineries will sell them because of SuperFund legislation. It is the same reason that when a gas station is sold, the fuel tanks are dug up and replaced. This way, there's no way to claim that the previous owner left hazardous material to be cleaned up. SuperFund laws say that every previous owner is liable for the cost of cleanup. It doesn't matter how long ago the property was sold.

2017 when Venezuela accepted RMB for oil and then USDT crypto. USDT is being used to skirt the US's control of the oil and bypassing the dollar.

The ships passing through the straight now are also paying Iran in RMB and crypto.

The petrodollar is the objective.

This isn't over any time soon