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Explosives probed for insight on San Bernardino attackers
Scriven King, explosive ordnance expert and national security professional with TAPSTRI, talks with Rachel Maddow about what investigators can learn about the San Bernardino shooters from the pipe bombs and other explosives they made.
PA joins states withholding National Guard over Trump policy01:13
Parents struggle to find children ripped away by Trump policy04:54
Local groups work where Trump fails to reunite kids with parents06:24
Lawsuit over family splitting policy has Trump playing word games08:58
Trump cruel to migrant kids to drive immigration political wedge21:35
Trump accelerates rate of taking migrant kids from parents19:35