CNN  —  President Joe Biden acknowledged Tuesday that Vice President Kamala Harris wouldn’t act as a carbon copy of his own administration, tacitly nodding to a key challenge his vice president faces as she enters the final sprint of her campaign: How to distinguish herself from his record. Delivered during what has become a rare campaign stop for the incumbent, Biden said Harris’ loyalty to him up to now doesn’t mean she won’t forge her own way going ahead. “Every president has to cut their