Commerce Secretary Wilbur Ross said he sees a “big sea change” in Saudi Arabia regarding women in business.

Ross was back in Washington Monday after joining President Trump in Saudi Arabia where a number of business deals were sealed, including a Saudi arms agreement that could end up being worth $350 billion over 10 years.

Ross told CNBC that he saw signs that Saudi Arabia continues “liberalizing their society” and relaxing some of the restrictions on women under the strict interpretation of Islamic law that rules the kingdom.

“At one of the sessions where a lot of contracts were awarded, there was also some panel discussions,” said Ross, a billionaire who made his fortune investing in distressed assets.

“One of the panelists was the woman who is the head of the Saudi Arabian stock exchange,” he said. “That’s a very unusual event and to my knowledge the first time a