Repeating the term attributed to Trump a day earlier, spokesperson Rupert Colville says that "you cannot dismiss entire countries and continents as 'shitholes'."
Colville said on Friday that the comments, if confirmed, were "shocking and shameful" and "I'm sorry, but there's no other word one can use but racist."
He says Trump's reported comment could endanger lives by potentially fanning xenophobia: "It legitimizes the targeting of people based on who they are."
"This isn't just a story about vulgar language, it's about opening the door to humanity's worst side," he said.
Colville says Trump's reported comments "go against the universal values the world has been striving so hard to establish since World War II and the Holocaust."