The Nigerian president said Monday that he can’t force the U.S. to buy its crude oil after the boom in U.S. shale oil production has drastically reduced the need for it, Washington Examiner reports.

“I can’t tell the U.S. what to do,” Nigerian President Muhammadu Buhari said at a joint press conference with President Trump at the White House. “Luckily for us, we have got a market for our crude,” the Nigerian leader said, pointing to continued Asian demand for its light, high-quality oil.

However, Buhari said he hopes to find new inroads for Nigerian crude oil from the U.S. chemical sector, which needs lighter, more expensive crude for producing highly refined chemical products. Crude oil imports from Nigeria have plunged from about 40,000 barrels per month in 2007 to just over 10,000 barrels in January.