CNBC | Oil just had its worst month in 2 years as Trump pressures Saudi Arabia to pump more CNBC A handful of big one-day losses during July pushed the oil market to its biggest monthly decline in two years — and the source of those big swings can often be traced back to the White House. Supply and demand for oil are roughly in balance, so ... Oil Posts Largest Monthly Loss Since 2016 Amid Oversupply Risks Oil Prices Decline as Investors Await US Stockpiles Data Oil to hold steady into 2019 as OPEC, US compensate for supply hitches |