Quotemore an economic one than a supply one.
America wants to be able to induce some scarcity here and there so our social parasites do not have to work.
Had they the morality of America, Venezuela and Russia would try to keep the price low. Considering how hard America has worked to make enemies of both Russia and Venezuela they might decide to do that.
And do not forget that America will need Orinoco oil to melt all the ice in Greenland (53rd state after Canada), to get at all the gold because we won't have enough of our own oil to do that.
I also think the plan is to use A.I. to make this happen so our compassionate great orange leader does not have to loose American lives and capital to get er done.
Piece of 🎂 cake.