Meet the Press NOW — March 23

President Trump walks back his threats to “obliterate” Iran's power plants. New video of the deadly collision at LaGuardia Airport shows the moment of impact between an Air Canada plane and a firetruck which killed two pilots. A former TSA administrator joins Meet the Press NOW to discuss ICE agents being deployed as security lines continue to grow at airports nationwide and President Trump declines to take an off-ramp to end the DHS shutdown. For more context and news coverage of the most important stories of our day, click here: https://www.nbcnews.com » Subscribe to NBC News: http://nbcnews.to/SubscribeToNBC » Subscribe to Here's the Scoop podcast: https://www.nbcnews.com/heres-the-sco... Every day, NBC News helps people understand what’s happening and why it matters — through fact-based reporting, meaningful conversations, and powerful stories. From its leading news broadcasts — TODAY, NBC Nightly News, Meet the Press, and Dateline — to NBC News NOW, the 24/7 streaming news channel, plus chart-topping podcasts, the NBC News app, and NBCNews.com, NBC News keeps audiences informed and connected to the stories shaping our world. Connect with NBC News Online! NBC News App: https://apps.nbcnews.com/mobile Breaking News Alerts: https://link.nbcnews.com/join/5cj/bre... Visit NBCNews.Com: http://nbcnews.to/ReadNBC Find NBC News on Facebook: http://nbcnews.to/LikeNBC Follow NBC News on Twitter: http://nbcnews.to/FollowNBC Follow NBC News on Instagram: http://nbcnews.to/InstaNBC #BreakingNews #Politics #News