In an opinion piece for CNN, Mae Ngai (Columbia Univ.) makes the historical comparison between President Donald Trump's recent Executive Order on immigration and the Chinese Exclusion Act of 1882. Made ostensibly on the grounds of national security, the Act also displayed "palpable animus" toward an ethnic group. Responses to the Act in the late twentieth century changed immigration law to prohibit blatant discrimination. But "it remains to be seen how far we have really come."