In politics, as in baseball, June predictions aren’t the wisest -- especially when it comes to forecasting presidential running mates. That said, Joe Biden has done a favor for those of us who engage in idle “veep” speculation. By limiting his choices to strictly double-X-chromosome, the Democrats’ nominee-in-waiting has a tapered list of options. And if recent news accounts are to be believed, at the top of said list is California Sen. Kamala Harris, who at this time in 2019 was a presidential hopeful.