The stock market reacts to President Trump's pressure on the Federal Reserve. The Vatican begins a period of mourning as Catholics remember the life and legacy of Pope Francis. NBC News Senior National Security Correspondent Courtney Kube joins Meet the Press NOW to discuss a new report that Defense Secretary Pete Hegseth shared details of Yemen strikes in new Signal chat.  Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.