Since entering the race as the designated Democratic candidate for president, Vice President Kamala Harris has seemingly walked back some of her previous positions. In the latest example, Harris has apparently abandoned support for federal rules that would mandate the production of electric vehicles (E.V.s). “In a lengthy ‘fact-check’ email last week that covered several issues, a campaign spokesperson included a line saying that Harris ‘does not support an electric vehicle mandate,'” report Alex Thompson and Ben Geman of Axios, “suggesting she changed her previous position, without elaboratin…