Five years ago, standing in front of a crowd of some 20,000 people in Oakland, California, Kamala Harris announced that she was running for president. “My whole life, I’ve only had one client: the people,” she said. Now that President Biden has dropped out of the race and Harris has become the presumptive Democratic nominee, it’s fair to start asking what, exactly, she plans to do for her client if she wins in November. Despite Harris’s long career and remarkable rise in politics — she has...