WASHINGTON (AP) – President-elect Joe Biden has picked California Attorney General Xavier Becerra to be his health secretary, putting a defender of the Affordable Care Act in a leading role to oversee his administration’s coronavirus response. If confirmed by the Senate, Becerra will be the first Latino to head the Department of Health and Human Services. It’s a $1-trillion-plus agency with 80,000 employees and a portfolio that includes drugs and vaccines, leading-edge medical research and health insurance programs covering more than 130 million Americans. Separately, Biden has picked a Harvard infectious disease expert, Dr. Rochelle Walensky, to head the Centers for Disease Control and Prevention.