Bill de Blasio Not Ready to Endorse Hillary ClintonNYC Mayor Bill de Blasio, Hillary Clinton's former campaign manager explains why he's not ready to endorse Hillary Clinton just yet.Get more newsLiveonPrintSaveCreate your free profile or log in to save this articleApril 12, 2015, 2:57 PM UTC / Updated April 12, 2015, 2:57 PM UTC / Source: NBC News