Former Mexican President Vicente Fox ripped President Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE on Twitter on Thursday evening for reportedly referring to Haiti, El Salvador and some African nations as "shithole countries" in an Oval Office meeting.

In a tweet, the former president accused Trump of owning "the foulest shithole in the world," his mouth.

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"Donald Trump, your mouth is the foulest shithole in the world. With what authority do you proclaim who’s welcome in America and who’s not," Fox asked.

Fox went on to ask Trump whether he had forgotten his own family's immigrant history.

"America’s greatness is built on diversity, or have you forgotten your immigrant background, Donald?"

.@realDonaldTrump, your mouth is the foulest shithole in the world. With what authority do you proclaim who’s welcome in America and who’s not. America’s greatness is built on diversity, or have you forgotten your immigrant background, Donald? — Vicente Fox Quesada (@VicenteFoxQue) January 11, 2018

Fox is a frequent critic of Trump on Twitter, particularly over the president's immigration agenda. Fox disagrees with Trump's plan for a wall or fencing on the U.S.-Mexico border and with Trump's assertion that Mexico will pay for it.

Trump reportedly referred to the nation of Haiti as well as several African countries as "shithole" nations during an Oval Office meeting with lawmakers Thursday on immigration solutions, according to several people briefed on the conversations.

The White House did not deny Trump's remarks in a statement to reporters following their publication in The Washington Post.

“Certain Washington politicians choose to fight for foreign countries, but President Trump will always fight for the American people,” White House spokesman Raj Shah said when asked to comment on the Post story.

The reported remark was met with swift criticism from Democratic lawmakers and other critics of the president in the media.