SBA Administrator Linda McMahon announces her resignation and departure from the Trump Administration. President Trump renews his war on Obamacare, vowing to defeat the plan in court and pave the way for a new plan created by Republicans. Attorney Michael Avenatti is accused of extorting millions from Nike. Washington continues to process and question the details of Robert Mueller's Russia report. Plus -- the battle between "Empire" actor Jussie Smollett and the city of Chicago grows uglier. CBS News Correspondent Steve Dorsey will have these stories and more on the CBS News Weekend Roundup.