Kamala Harris passes threshold needed to become Democratic presidential nominee in DNC roll call vote CBS NewsHarris makes history as first Black woman, Asian American presidential nominee USA TODAYKamala Harris raised $310 million in July, dwarfing Trump haul for month CNBC‘There’s a renewed sense of hope’: Dems crank up campaign as Harris clinches nomination POLITICOKamala Harris officially secures Democratic nomination for president The Washington Post