Tonight on the Last Word: A federal judge temporarily blocks the Texas anti-abortion law. Also, Treasury Secretary Janet Yellen warns of “catastrophic” risks if Congress doesn’t raise the debt limit by Oct. 18. Plus, Democrats are fighting to keep governorships in swing states. And Fiona Hill opens up about Donald Trump. Cecile Richards, Dahlia Lithwick, Neal Katyal, Sen. Chris Van Hollen, Norm Ornstein, Zerlina Maxwell, Lt. Gov. Garlin Gilchrist and Lt. Gov. Mandela Barnes also join Lawrence O’Donnell.