AP Source: Kamala Harris to end Democratic presidential campaign

Democratic Sen. Kamala Harris is expected to end her campaign for the Democratic presidential nomination, according to a campaign official.The official requested anonymity to speak about Harris' plans.Harris launched her campaign in front of 20,000 people at a chilly, outdoor event in January. The first woman and first black attorney general and U.S. senator in California's history, she was widely viewed as a candidate poised to excite the same segment of voters that sent Barack Obama to the Whi