The Smoot-Hawley tariff of 1930 was a contributing factor to the start of WWII in Europe. Jared Kushner's paternal grandparents came close to becoming civilian casualties of the war.  His grandmother was a member of the Bielski brothers partisan group that was depicted in the 2008 movie "Defiance". I hope that Kushner can knock some sense into his father-in-law before things get out of hand.