DOJ To Mueller: Testimony Must Stay Within Bounds Of Report; DOJ To Mueller: Testimony "Must Remain Within The Boundaries" Of The Report Because Matters "Covered By Executive Privilege"; DOJ To Mueller: Testimony Must Stay Within Bounds Of Report; Thomas Friedman Joins Us; Thomas Friedman On What 2020 Democrats Must Change To Win; NY Times Columnist To 2020 Dems: "Spare Me The Revolution!"; Pres. Trump Vs. Thomas Friedman; Pres. Trump Calls Thomas Friedman "Weak And Pathetic" After N.Y. Times Op-Ed Columnist Called Him "Racist"; Pres. Trump Continues His Twitter Attacks On 4 Democratic Congresswomen; Thomas Friedman's Take On What 2020 Democrats Must Change To Win; How Mueller Does When The Heat Is On; When Mueller's In The Hot Seat via Knit