CNN THE SITUATION ROOM w/ Wolf Blitzer

Trump says he only recently learned of Shanahan background issues and didn't ask him to withdraw, denies a vetting problem, Trump en route to Orlando for re-election launch after again claiming millions of deportations planned next week, Shanahan withdraws his nomination for Defense Secretary, resigns from Pentagon amid reports of bitter divorce, CNN: House Judiciary Democrats plan to question Hope Hicks about hush-money coverups of Trump's alleged affairs, Trump doubles down on claim of deportations next week, DHS officials surprised but Trump insists they already knew, Representative Kildee joins House Democrats calling for impeachment proceedings, CNN: White House will assert immunity for Hope Hicks during Congressional testimony, Trump: U.S. is "Very prepared" to deal with Iran as Iranian commander boasts about ability to strike American warships, Manafort avoids notorious jail after unusual intervention by Deputy Attorney General

Iranian official: U.S. and Iran headed for confrontation; Biden says if he's nominated he'll beat Trump in the south; Trump falsely denies existence of dismal internal polls; Campaign fires pollsters after leaks show Biden ahead; NYT: Intel officials hesitant to fully brief Trump on escalating U.S. cyberattacks on Russia; Trump scolds his Chief of Staff: "You just can't cough" in the middle of an interview; New poll shows growing support among Dems for impeachment; Ocasio-Cortez: Pressure to impeach Trump grows every day; Former Trump aide & confidant Hope Hicks to testify behind closed doors before House Panel Wednesday; Intel's Schiff: Threat to subpoena the FBI is yielding results; Biden: "I plan on winning Georgia, North Carolina, South Carolina... I believe we can win Texas & Florida"; Dem presidential candidates stepping up attacks on Biden; Kim Jong Un's high-stakes diplomatic gamble: Playing Trump, Putin & China's Xi off each other

DOJ releases legal opinion backing treasury secretary's refusal to hand over Trump tax returns; Trump on foreign dirt: "Of course you have to look at it" but he'd report to FBI if info was "Incorrect, badly stated"; McConnell dismisses outrage over Trump's comments about accepting foreign dirt on opponents; U.S: Drone spotted Iranians closing in on tankers; Pentagon Chief: "We have an international situation"; Department of Justice Legal Opinion: Democrats' demand for Trump taxes "Unprecedented" and "Serious risk of abuse"; Source: First Lady open to her communications director becoming White House Press Secretary; Watch "Woman of Mystery: Melania Trump" at 9PM ET Tonight; Trump compares First Lady to Jackie O; More clues in mysterious shooting for former Red Sox star

Press Secretary Sarah Sanders to leave the White House; Senior GOP Source: Trump's foreign dirt comment is "Really, really bad... it would be impeachable"; Cummings wants Kellyanne Conway to testify after watchdog says she's violated Hatch Act; Pompeo blames Iran for attacks on tankers; CNN: U.S. Navy saw unexploded mine attached to one of the tankers hit by explosives in the Gulf of Oman; Oil prices jump after tanker explosions in Gulf of Oman; Saudi Official: Nobody wants war but it's up to the Iranians; Iran's behavior is not acceptable; State Department suggests Saudis not doing enough to bring Khashoggi killers to justice; House Judiciary Committee members reviewing Mueller documents; Democrats split over how to respond to "unprecedented" White House stonewalling, defying of subpoenas; GOP Sen. Blackburn: Bill to mandate reporting of foreign contacts a "Blatant political stunt"; Kim Jong Un letter to Trump was birthday greeting; Biographer: Dictator know what buttons to push

House panel votes to hold Attorney General Barr, Secretary Ross in contempt as Trump asserts executive privilege on census documents; Trump Jr: "Not at all" worried about perjury after meeting again with Senate intel panel; Source: Former White House aide Hope Hicks will testify behind closed doors before house judiciary; Poll: Biden leads fellow democrats in key early state of Nevada; Trump Baselessly accuses reporters of making up sources and calls much of news media in the United States "Corrupt"; Trump on North Korea: "It's not what I meant, it's what I said" about reported CIA ties to Kim Jong Un's half brother