Businessman Elon Musk, an ally of President-elect Donald Trump, endorsed Republican Senator Rick Scott for U.S. Senate majority leader on Sunday as the race to fill the influential post heats up after the party won control of the chamber.

The billionaire, who is slated to take on a key domestic role in Trump's administration, is already dipping his toes into foreign policy

Since the election, Mr. Musk has used his social media company to talk up how bright the future will be under the president-elect.