: The Food and Drug Administration’s staff endorsed Johnson & Johnson’s Covid-19 vaccine for emergency use, a critical step in bringing a third shot to the U.S. marketplace. CNBC’s Meg Tirrell also reports on a potential Moderna variant booster shot. Dr. Peter Hotez, Texas Children’s Hospital, reports on why there are big declines in coronavirus in some states and not others. And will the variants drive the numbers higher in the long run? CNBC’s Eamon Javers reports on disagreement in the Republican Party over whether former President Trump should appear at the conservative gathering CPAC. CNBC’s Ylan Mui reports on the Democratic push to pass a minimum wage hike via reconciliation. Plus 3D printed homes and new trouble for New York Governor Andrew Cuomo.