In the CBS interview, Ms Yellen acknowledged she was “not sure precisely” what Mr Biden had been referring to, but added “we have really no basis – to the best of my knowledge – to examine his finances of his company” and “I’m not aware of concerns that would cause us to”. Mr Musk’s $US44 billion ($64 billion) takeover of Twitter is still facing US government scrutiny over national security concerns that his foreign partners may be able to access user data, people familiar with the matter said after her CBS News interview. The potential for action by Cfius emerged...