Tonight on the Last Word: Florida issues a stay-at-home order for 30 days. Also, the Boston Globe editorial board argues that Trump has ‘blood on his hands’ over coronavirus. Plus, Chairman Adam Schiff talks to Lawrence about drafting legislation to help hold the Trump administration accountable for its coronavirus response. The CDC is considering new guidelines for who should wear masks. And a fourth-grader sews masks for health care workers battling the coronavirus pandemic in Boston. Dr. Luciana Borio, Ron Klain, Bina Venkataraman, Dr. Siddhartha Mukherjee, Gaby Araica and Tracy McHale-Araica also join Lawrence O’Donnell.