Karoline Leavitt hit out at Jill Biden in a scathing attack during her White House press briefing on Thursday as she accused the former First Lady of being "complicit" in an alleged "cover-up" of her husband's declining health.

Karoline Leavitt's statement comes after a senior Department of Justice official suggested Dr Biden should face criminal charges for "elder abuse" of her husband

The White House has accused former First Lady Jill Biden of continuing to lie about her husband’s health and says she should be forced to explain under oath about what she knew about his cognitive decline.