Twitter shareholders have approved Elon Musk's $44 billion offer to buy the social media platform, months after the billionaire tried to back out of the deal. The case will be heard by a US court in October. Meanwhile, a Senate panel has heard explosive testimony about security practices at Twitter. A whistleblower alleges that a Chinese agent was on Twitter's payroll and that management routinely ignored warnings about data security. Also in the show, US inflation hovers near 40-year highs.