A couple of weeks ago, Jeffrey Friedman, the director of Niskanen’s Institute for the Study of Politics (ISP), wrote an essay that traced the roots of Donald Trump’s electoral support to nationalism.

Last week, ISP hosted a three-part conversation in response to Friedman’s original piece. Vice president for policy Will Wilkinson kicked things off by arguing that xenophobia drives Trump’s support. Guest author Morgan Marietta, a political scientist at the University of Massachusetts, argued that Trumpism is an ideology of nationalism. Finally, Friedman rounded out the debate by arguing that nationalism can produce the same type of exclusionary policies that are often attributed to xenophobia.

You can find the four pieces (in order) herehere, here, and here.