President Trump Fires Sec. of State Rex Tillerson; GOP House Intel Panel Says There Was No Trump-Russia Collusion; Trump Blocks Qualcomm Deal; National Geographic Acknowledges Racist Past; Charter Bus Carrying High School Students Plunges Into Ravine, Driver Killed; Florida Prosecutors Wants Death Penalty for Nikolas Cruz; Trump Inspects Border Wall Prototypes in California; Updates on Austin Package Explosions

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