Early in his presidency, Donald J. Trump called for a federal commission to investigate an issue that was personal for him: voter fraud in the 2016 election. The de facto leader of that commission is Kris Kobach, the Kansas secretary of state and a leading advocate of restrictive voting laws. Here’s what you need to know about Mr. Kobach, his beliefs and what he has accomplished in Kansas. Guests: Michael Wines, a Times correspondent who has written about the president’s commission; Elaine Bowers, a Republican state senator in Kansas. For more information on today’s episode, visit http://nyti.ms/2gMxzr0.