President Trump hits back after lawmakers grill the nation's top intelligence official in an unprecedented hearing. The whistleblower report alleges there's evidence of a White House cover-up over the president's conduct. Shortly before House Speaker Nancy Pelosi announced a formal impeachment inquiry this week, Hillary Clinton told "CBS Sunday Morning" the president's actions need to be investigated. A soldier is dead and three others are injured after an army helicopter crashed in Louisiana. A big jump in cases of lung illnesses tied to vaping adds new urgency to the nationwide public health crisis. The head of Uber is responding to a scathing report about the ride-hailing company's passenger safety protocols. Passengers on a cross-country Alaska Airlines flight are safe, after a bizarre incident captured on video forced an emergency landing.

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