Oil prices are now down over 20 percent from recent highs, and President Trump knows exactly where the credit for that belongs. “If you look at oil prices they’ve come down very substantially over the last couple of months,” President Trump said in a news conference last week. “That’s because of me.” The President is partially correct about that, but not for the reasons he thinks. He attributes it to his hard line on OPEC. But what has actually happened is that crude oil inventories in the U.S. have risen…