The U.S. president reportedly made the comment during a meeting with congressional leaders in the Oval Office on Thursday.
In an afternoon of drama and confusing developments, four other GOP lawmakers - including hardliners on immigration - were also in Trump's office for Thursday's meeting, a development sources said Durbin and Graham did not expect.
Rene Civil, a left-wing activist in Haiti, demanded the U.S. president apologise "before the entire African continent, as well as before Haiti, the country whose blood has been used by ancestors who have served with their minds and bodies to liberate the United States itself from slavery".
The Vatican newspaper on Friday branded U.S. President Donald Trump's reported comments about African countries and Haiti as "particularly harsh and offensive".
Mr. Trump has tweeted a denial that he made this statement. I could tell you how I have spent an inordinate amount of time and energy, throughout my life, educating people about Haiti and disabusing them of the damaging, incorrect notions they have about the country of my parents' birth.
Hunder said he expects Trump will hear from Haitian President Jovenel Moise and African leaders about the vulgar remark.
The group of United Nations diplomats said it was "extremely appalled at, and strongly condemns the outrageous, racist and xenophobic remarks".
El Salvador slammed them as "deplorable".
Some in Africa made a decision to own Trump's vulgar language or throw it back in his face.
USA missions went into damage control mode.
In 2015, there were 676,000 Haitian immigrants in the United States, up from 587,000 in 2010, accounting for less than 2 percent of the USA foreign-born population, according to the Washington-based Migration Policy Institute.
Trump's language triggered a barrage of criticism from both Democrats and Republicans.
The comments were "clearly" racist, Kalondo said, but stressed the USA was "much stronger than the sum total of one man". I could tell you about my parents, how they came to this country with so many other Haitians, how they embraced the American dream and thrived, how I and so many first-generation Haitian-Americans are products of our parents' American dreams.
Trump did not publicly address the controversy during the ceremony and ignored repeated questions about it from reporters in the room.
Espaillat says Trump's alleged remarks are in line with his previous behavior.
The White House did not immediately respond to questions about the president's tweets.
But the White House later rejected it, plunging the issue back into uncertainty eight days before a deadline that threatens a government shutdown.
South African comedian Trevor Noah, star of "The Daily Show", described himself as an offended citizen of "South Shithole" and also called Trump out for racism, especially for saying he preferred immigrants from Norway.