Tonight on the Last Word: The CDC announces that fully vaccinated people do not need to wear masks in most places. Also, President Biden tells GOP senators his “red line” is inaction on the infrastructure bill. Plus, legal jeopardy increases for Donald Trump and Rep. Matt Gaetz. And an active-duty Marine is charged for five criminal counts in the Jan. 6 insurrection. Dr. Ashish Jha, John Heilemann, Zerlina Maxwell, Andrew Weissmann and Rep. Tim Ryan join Lawrence O’Donnell.