When Joe Biden endorsed Kamala Harris to become the Democratic nominee, Donald Trump confidently claimed she’d be even easier to defeat in November than Biden would have been. In reality, the vice president’s arrival in the race on a tidal wave of support from her colleagues and party donors creates a major headache for the Republican’s campaign, which, until Sunday, had been enjoying mutinous disarray among its Democratic opponents. Beyoncé Gives Her Approval for Kamala to Use ‘Freedom’ as Campaign Anthem Now, with Harris already claiming to have enough support to become her party’s nominee, reports suggest the Trump campaign...