Biden Steps Down, Endorses Harris as Musk Faces Scrutiny Over Social Media Issues

President Biden announces he will not seek reelection, endorsing Kamala Harris, while Elon Musk is questioned about Twitter's handling of her campaign account.

President Biden cites age and mental acuity concerns in his decision to step down.
Kamala Harris receives Biden's endorsement and vows to unite the Democratic Party.
Elon Musk faces allegations of social media interference after users report issues following Harris' campaign account.
Musk's financial support for Trump's campaign raises questions about his political motives.
Silicon Valley leaders express mixed reactions to Harris' candidacy and Biden's withdrawal.