Alex Witt, in for Katy Tur, spoke with Fred Guttenberg, parent of Jamie Guttenberg, a victim of the 2018 Parkland, FL school shooting, and Florida St. Senator Roland Gutierrez, about President Biden's new gun regulation proposal hoping to close 'gun show' loopholes. » 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. Connect with MSNBC Online Visit msnbc.com: on.msnbc.com/Readmsnbc Subscribe to the MSNBC Daily Newsletter: ...