On Capital Tonight: US House Speaker Paul Ryan not running for re-election this year. We have the latest from Washington, plus our Advocates Jonathan Felts and Courtney Crowder look at the political ramifications. Will Pres. Donald Trump fire special counsel Robert Mueller? What kind of attorney-client privilege does he have now that the FBI has raided his attorney Michael Cohen's office? We ask our veteran investigators Chris Swecker and Rufus Edmisten.