Theresa May has earned another critic in her handling of Brexit, as if she didn't have enough, with Donald Trump condemning the prime minister for refusing to listen to his ideas on how to negotiate with the European Union.
President Trump and first lady Melania Trump welcome Irish Prime Minister Leo Varadkar at the South Portico as he arrives at the White House on Thursday.
Trump said that Brexit is "tearing countries apart".
"I will tell you, I'm surprised at how badly it's all gone from the standpoint of a negotiation", Trump told reporters in the Oval Office as he met Irish Prime Minister Leo Varadkar.
Asked if he thinks the Brexit deadline should be extended, Mr Trump said: "I think they are probably going to have to do something because right now there are in the midst of a very short period of time, at the end of the month and they are not going to be able to do that".
He said: "I don't think another vote would be possible because it would be very unfair to the people that won".
"I regret that Brexit is happening and the United Kingdom was a really important part of the European Union".
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The Taoiseach referred to Mr Trump's "Make America Great Again" slogan and said that while the United States had military might and a booming economy, they shouldn't lose sight of what makes America great already - its people and its values.
He said: "We're talking to them about trade. I think it could have been negotiated in a different manner".
Varadkar and his partner are in Washington as part of an annual trip ahead of St. Patrick's Day. "I regret Brexit's happening".
While Varadkar prepared to have breakfast with Pence and a who's who of Irish-Americans, including the president of Notre Dame, Trump tweeted an open invitation to Britain to free itself of the European Union and its trade rules. Mr Trump said the "issue on the Border of Ireland is one of the most complex points". "I predicted it was going to happen".
MPs are set to vote on Thursday evening on whether to request a delay until at least June. "But they're going now and that's their decision", Varadkar said, adding that the negotiations shouldn't cause any problems in Northern Ireland.
Brexit won't spoil the relationship, even given Trump's history of turning on leaders who cross him, said Marquette University historian Timothy G. McMahon, president of the American Conference for Irish Studies.
This prompted Mr Trump to complain about how the U.S. was treated in trade talks with the European Union and he warned of tariffs being slapped on European Union products.