The Situation Room With Wolf Blitzer

Awaiting White House coronavirus briefing; Under pressure from governors, Trump invokes defense production act, ordering GM to make ventilators; New hot spots emerge as U.S. leads world in cases; Officials concerned about emerging outbreaks in Detroit, New Orleans, Chicago, Miami, Dallas, Atlanta and Philadelphia; California sees 26% increase in one day; U.S now the epicenter with most coronavirus cases in world; Letter from Michigan hospital system details who gets life-saving care in "Worst-Case Scenario"; Bill Gates: "Extreme" Nationwide shutdown needed for 6-10 weeks; U.S. Navy hospital ship Mercy arrives in Los Angeles; New York Governor: Could see peak hospital demand in 21 days; At least four dead on cruise ship; Pence, Fauci say Trump's desire to reopen U.S. by Easter is "Aspirational"; Trump hasn't responded to Michigan Govenor's request for disaster declaration; Detroit emerging as new virus hot spot; No Democrats invited to White House coronavirus bill s