March 23, 2021

Tuesday on the NewsHour, Colorado mourns as a suspect is charged in the death of 10 people in Boulder, the country's second mass shooting in less than a week. Then, we report from the border as more unaccompanied minors cross into the U.S. and thousands are sent back to Mexico. Also, questions arise about the AstraZeneca vaccine after reports of incomplete data regarding its efficacy.