However, responding to Mr Trump's comments, a Downing Street spokesman said the Brexit withdrawal agreement struck on Sunday would allow the United Kingdom to sign bilateral deals with countries including the US. On Sunday, EU leaders formally agreed to the deal at a summit in Brussels.
Donald Trump has criticised Theresa May's Brexit deal as a "great deal for the EU" that may make it hard for the United Kingdom to trade with the USA, the latest blow to the embattled British Prime Minister's attempts to guide Britain out of the European Union.
Conservative MP Mark Francois told May her deal was "as dead as a Dodo".
"My focus for the next few weeks is making this deal possible", she said.
Mrs May made the announcement in her third statement to the Commons on leaving the EU.
"However, our estimates provide a clear indication of the broad scale of the impact of the deal negotiated by the prime minister".
Mrs May fought off heavy criticism of her Brexit deal from MPs today.
The research was undertaken by the National Institute of Economic and Social Research (NIESR) and commissioned by the People's Vote campaign.
"I think we managed to make a diplomatic piece of art", she said.
The government said the deal was in "our national interest".
European Commission President Jean-Claude Juncker warned that Britain can not expect to get a better deal, if its parliament rejects the agreement.
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Britain's public finances would be between 0.4 percent and 1.8 percent of GDP worse off under May's deal, or 1 percent and 3.1 percent lower in a no-deal scenario, according to the study. "I think it has ceded too much control". "This is the deal".
The UK will not be to pursue an independent trade policy during the 21 month transition period after Brexit, during which it will be in effect an European Union member state without any representation in the bloc's decision-making institutions.
The European Parliament and British Parliament still have to approve the current agreement.
"This is the deal that is on the table", she said.
"There is a choice which MPs will have to make".
Mrs May said the deal would deliver on jobs, but queried Mr Corbyn's commitment to a deal. "It would open the door to more division and more uncertainty, with all the risks that will entail", she added.
She argues that the British people are sick of endless debates about Brexit, and backing the deal will allow "us to come together again as a country whichever way we voted".
Former foreign secretary Boris Johnson branded the Prime Minister's deal a "disaster" and a "humiliation" for the UK.
"Right now if you look at the deal, [the UK] may not be able to trade with us".
"We are a satellite state - a memento mori fixed on the walls of Brussels as a ghastly gaping warning to all who try to escape".
At a bittersweet meeting, European Union leaders expressed sadness at the departure of Britain, the first country ever to leave the bloc. The truth is, under this Government we have never got off square one.