He’s telling companies to export instead of selling it here?
From the Op’s link.
“Citing Vortexa tracking data, Bloomberg said that up to 2.09 million bpd of gasoline, diesel, and jet fuel shipped out of the Gulf Coast last month. That rate represents the highest volume since 2016 based on known data”.
The market is determining the exports. The US banned imports of petroleum products, including diesel. The Europeans have reduced imports as a result of financial sanctions, and they are buying from alternatives sources.
The market for diesel was going to be tight even without the effects of the sanctions. If the sanctions are successful and reduce Russian output, then they will also result in a spike in global prices. No one can easily make up for the loss in Russian capacity, and the laws of supply and demand still apply in spite of the wishful thinking from politicians.
Money talks. The people running the oil distribution system are looking to maximize profits, not cater to international politics.
On the other hand Biden has been drawing down on the stocks of the Strategic Petroleum Reserve. Here is the graph for distillated fuel oil, which includes diesel fuel. The stocks have dropped from about 35% since Biden took office and they are falling fast.