When Kamala Harris took to the stage during a Democratic primary debate before the 2020 election and implied that Joe Biden was racist, his wife, Jill's, response was crystal clear. 'Go f**k yourself,' the then-future first lady vented, as she allegedly admitted during a conference call with supporters. And the relationship between the two women – that began badly enough during that contentious battle for the presidential nomination – has only gone downhill from there. Now, political insiders have told DailyMail.com that Democratic advisors are struggling to push past the powerful role that Jill Biden's loathing of Harris, 59, is...