Donald Trump Jr. will testify to the Republican-controlled Senate Intelligence Committee next month but Sen. Lindsey Graham (R-SC) said he should ignore the Senate subpoena. That even shocked a conservative legal analyst. Lawrence O’Donnell says Graham's statements "violated his oath of office." William Yeomans, Ron Klain and Jason Johnson join. » Subscribe to MSNBC: http://on.msnbc.com/SubscribeTomsnbc MSNBC delivers breaking news and in-depth analysis of the headlines, as well as informed perspectives. Find video clips and segments from The Rachel Maddow Show, Morning Joe, Hardball, All In, Last Word, 11th Hour, and more. Connect with MSNBC Online Visit msnbc.com: http://on.msnbc.com/Readmsnbc Subscribe to MSNBC Newsletter: http://MSNBC.com/NewslettersYouTube Find MSNBC on Facebook: http://on.msnbc.com/Likemsnbc Follow MSNBC on Twitter: http://on.msnbc.com/Followmsnbc Follow MSNBC on Instagram: http://on.msnbc.com/Instamsnbc Senator Lindsey Graham Wants Trump Jr. To Ignore Senate Subpoenas | The Last Word | MSNBC