US President Donald Trump on Sunday told unnamed Democratic Congresswomen to "go back" where they came from, prompting senior members of the party to brand him a "racist" and a xenophobe. It is the latest controversial comment by Trump, who last year reportedly referred to countries in Africa as "shithole" nations, and who has spoken of "an invasion" of undocumented migrants. In a tweet, Trump referred to "'Progressive' Democrat Congresswomen," which appeared to be a reference to a group of outspoken relatively young, liberal women, all first-time members of the House of Representatives.