NBC's Peter Alexander speaks with Rep. John Mica talks about the Hoboken train crash and whether positive train control may have prevented it. Mica also talks about the Trump, Machado controversy.Sept. 30, 2016
UP NEXT
Ex-Trump aide describes how he dictated tweets as president
00:42
RFK Jr. says doctors found a dead worm in his brain
02:57
Joy Reid: Brittney Griner was a pawn in Putin's politics
06:19
Jen Psaki: Preparing makes you more agile as a communicator
06:07
Activist Luis Miranda Jr. on engaging Latino voters, his new book 'Relentless'
07:15
Columbia University cancels university-wide commencement