Former Trump lawyer Sidney Powell pleaded guilty to charges in the Fulton County election interference case. Powell was among the Trump allies who had pushed conspiracy theories about voter fraud in the 2020 presidential election. Now, MSNBC’s Katie Phang says Powell could be a "star-witness" in this case against the former President after she struck a deal with prosecutors. » Subscribe to MSNBC: on.msnbc.com/SubscribeTomsnbc 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 at 9pm Eastern. Con...