President-elect Donald Trump is reportedly considering 53-year-old Republican Senator Marco Rubio as a potential Secretary of State, according to information shared by the New York Times, citing three sources familiar with the matter.

The Cuban-American senator, vice chairman of the Senate Intelligence Committee, has been viewed as a leading candidate for the role. He had previously been a prominent contender for Trump’s vice-presidential pick. However, the report notes that Trump “may still change his mind at the last minute.”

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Meanwhile, Trump is also said to be considering Republican Congressman Mike Waltz for the role of White House National Security Advisor, according to a source who spoke to Reuters. Waltz, a retired U.S. Army Green Beret known for his firm stance on China, would bring a hardline approach to the position.

Waltz, a devoted Trump ally and National Guard colonel, has been vocal about the need for the U.S. to prepare for potential conflict with China, frequently criticizing China’s actions in the Asia-Pacific region.