Texas families mourn the dead

First: Police are mulling over possible motives after a mass shooter blasted his way through an outlet mall in Allen, Texas, taking eight innocent lives. 

Plus: Another eight people are dead in Brownsville, Texas, after a Range Rover bulldozes migrants. 

And: New polling shows America is deeply unhappy with Joe Biden -- including Democrats -- as the president confronts crises on the border and on Capitol Hill. 

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