Democrats pulled off quite a trick in swapping Kamala Harris for Joe Biden as their presumptive candidate for U.S. president. The vice president is younger and more dynamic than the decaying president of the United States, and yet she’s somehow still not a better candidate — or person, for that matter — than the man she’s expected to replace on the ticket. Her main selling point is that at least she’s not Donald Trump, the deeply flawed Republican standard-bearer. Then again, Trump’s main virtue may be that at least he’s not Kamala Harris.