As House and Senate Democrats press forward with their quest to destroy Donald Trump's presidency by any means necessary, they are simultaneously focused on finding someone in their ranks who could be an effective presidential candidate for their own party in 2020. Fifty-three-year-old Kamala Harris, who served as the Attorney General of California from 2011-16 and then filled the vacant U.S. Senate seat that had been occupied for a quarter-century by Barbara Boxer, is someone whom they will undoubtedly look at very closely. To be sure, Harris possesses all the qualifications necessary to be a Democratic leader, insofar as she...