U.S. Energy Secretary Chris Wright told oil industry executives to prepare for possible diesel export limits as internal Trump administration discussions intensified. According to Sina Finance, Wright delivered the message by phone on Tuesday night, hours after U.S. President Donald Trump said he had urged officials to consider restricting diesel exports.

The debate continued on Wednesday, but no final decision had been made. Trump’s top aides were divided, while oil executives warned the White House that any ban would eventually push global prices higher.

Wright later said a voluntary solution was being considered and that the government still wanted to help the industry increase diesel supply without imposing a ban. He said the goal was to work with the industry to boost U.S. diesel supply and curb price pressures, and later added that a full ban on diesel exports was not under consideration.

A White House official denied a Politico report that the administration was drafting a 90-day diesel export ban, calling it fake news. According to Sina Finance, government officials also contacted some industry stakeholders to downplay the speculation.

Morgan Stanley said U.S. drivers should prepare for higher gasoline prices if the Trump administration bans diesel exports. The bank warned that such a restriction would have a major impact.

Analysts led by Martijn Rats said in a September 23 report that a diesel export ban could have the opposite of its intended effect if U.S. refiners cut runs, pushing gasoline prices higher. They said U.S. diesel prices would fall while overseas prices would rise, with Europe seen as the region most affected.

Goldman Sachs held a similar view. Daan Struyven, co-head of global commodity research, said a U.S. diesel export ban would quickly fill domestic storage, pressure diesel prices, and eventually reduce gasoline supply while lifting retail gasoline prices at the pump.