PRI's The World Published by PRI's The World We’ve been here before: Historians annotate and analyze immigration ban's place in history Listen Queue Download this audio Want to embed this player? Use the code below. More info. <iframe frameborder="0" scrolling="no" height="130" width="100%" src="https://www.wnyc.org/widgets/ondemand_player/wnyc/#file=/audio/json/734770/&share=1"></iframe> Share on Facebook Share on Twitter Email a Friend The US government has in the past excluded immigrants on the basis of nationality, religion, political beliefs and in the name or national security. Immigration historians annotated the executive order President Trump signed on Friday.