A.M. Edition for March 23. TikTok CEO Shou Zi Chew is set to testify before a powerful U.S. House committee today, facing skeptical lawmakers as many Republicans in Congress call for an outright ban of the popular app. WSJ tech policy reporter John McKinnon explains Mr. Chew’s likely defense of the company and whether it has any allies on Capitol Hill. Plus, markets whipsaw after Treasury Secretary Janet Yellen said she doesn’t support a blanket guarantee of U.S. bank deposits. Luke Vargas hosts.

Learn more about your ad choices. Visit megaphone.fm/adchoices