Who’s Afraid of Kamala Harris?

We figured Republicans would try to make an issue of Kamala Harris’s fitness to be President, but who thought the Vice President would become central to the strategy to keep President Biden in the race?

That seems to be a big part of the emerging Team Biden game plan to stem the Democratic panic about having Mr. Biden at the top of the ticket in November. The theme: Go with Joe or you’ll get Kamala.

News reports this week say a Biden aide told donors their money would go to Ms....