Rep. Madeleine Dean, D-Penn., asked Facebook CEO Mark Zuckerberg on Wednesday whether he knew anything about his company renting out a block of rooms at the Trump International Hotel in Washington, D.C., spurring an exchange about the ethics of currying favor with the president by spending money at his businesses.

“Does Facebook do any business with Trump International Hotel here in Washington, D.C.?” Dean asked during the House Financial Services Committee hearing. Zuckerberg said he didn’t know.

“There have been public reports of enterprises and even governments doing business with Trump hotels to curry favor with the Donald Trump administration. Do you think you could get us the answer to whether or not you have been doing any business — Facebook, your company — has been doing any business with the hotel?” Dean asked.

“Congresswoman, I will look into it with my team,” Zuckerberg said.

“And you’ll be able to get us data and information?” Dean continued. Zuckerberg responded that his team would follow up with her office. Dean told The Intercept that she would follow up with written questions to Zuckerberg’s team.

“Is there any chance that Facebook actually books blocks of rooms at Trump International Hotel and does not use them?” Dean asked.

“I would be very surprised to hear if that were the case,” he said. Dean asked who at the company would be in charge of something of that nature. “I’m not sure what team would be in charge of a thing that I don’t think we are doing,” Zuckerberg said.