Nikki Haley announced she is ending her presidential campaign, but stopped short of endorsing Donald Trump. MSNBC’s Ari Melber reports on how Haley’s campaign exposes cracks in Donald Trump’s support. (Bookmark The Beat’s YouTube playlist, updated daily: msnbc.com/ari. Connect with Ari on YouTube: youtube.com/c/AriMelber IG: instagram.com/arimelber Merch: msnbc.com/beat5) » Subscribe to MSNBC: youtube.com/msnbc Follow MSNBC Show Blogs MaddowBlog: msnbc.com/maddowblog ReidOut Blog: msnbc.com/reidoutblog MSNBC delivers breaking news, in-depth analysis of politics headlines, as well as commentary and informed perspectives. Find video clips and segments from The Rachel Maddow Show, Morning Joe, The Beat with Ari Melber, Deadline: White House, The ReidOut, All In, Last Word, 11th Hour, and Alex Wagner who brings her breadth of reporting experience to MSNBC primetime. Watch “Alex Wagner Tonight” Tuesday through Friday a...