FILE - In this June 30, 2018, file photo, U.S. Sen. Kamala Harris, D-Calif., speaks at the "Families Belong Together: Freedom for Immigrants" March in Los Angeles. As Democrats begin to think about the 2020 presidential race, they face a choice between pragmatists who may be able to flip states that President Trump won in 2016 and those such as Harris, Sen. Cory Booker of New Jersey, or Beto O'Rourke of Texas, whose inspirational personal stories may connect with voters on a more emotional level. (Photo by Willy Sanjuan/Invision/AP, File)