Mr Bercow, Speaker of the House of Commons, has said that he strongly opposes the new US President addressing MPs and peers later this year.
The Speaker said "opposition to racism and sexism" were important considerations in the wake of Donald Trump’s ban on immigration from seven predominantly Muslim countries.
"After the imposition of the migrant ban, I am even more strongly opposed to an address by President Trump in Westminster Hall," Mr Bercow said.
The outburst comes after more than 1.8 million people signed a petition calling for the state visit to be cancelled to avoid "embarrassment" to the Queen.
What is the Speaker of the House of Commons?
The Speaker maintains order during debates and has the power to punish MPs who break the rules of the House of Commons.
After taking on the role, the MP must remain strictly non-partisan and renounce links to their political party during their time in office.
The Speaker is also forbidden from taking part in debates and is only allowed to vote in the event of a tie break.
Supporters of Mr Trump have attacked Mr Bercow for expressing his personal views even though he is meant to remain neutral on such issues.
Nigel Farage argued that the Speaker had “overstepped the mark”, adding: “For Speaker Bercow to uphold our finest parliamentary traditions, he should remain neutral.”
PA
What does John Bercow do? What is the Speaker of the House of Commons?
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Chinese President Xi Jinping speaks in the Palace of Westminster's Royal Gallery in 2015
Can John Bercow stop Mr Trump from addressing Parliament?
As one of the “three great keyholders” to Westminster Hall, the speaker is able to overrule entry to the Parliament estate.
Mr Bercow also opposes Mr Trump addressing MPs and peers in the Royal Gallery, which is often used for state receptions.
The Speaker said: “I do not perhaps have as strong a say in that matter. It is in a different part of the building.
“Although customarily an invitation to a visiting leader to deliver an address would be issued in the names of the two Speakers.
“I would not wish to issue an invitation to President Trump.”
The UK Reacts To Trump's 'Muslim' Travel Ban
Mon, January 30, 2017
President Trump signed an executive order banning immigration to the USA from seven 'muslim' countries. This led to protests across America and, now, the UK.
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People demonstrate during a protest at Downing Street in central London against US President Donald Trump's controversial travel ban on refugees and people from seven mainly-Muslim countries
Mr Bercow added: “If a state visit takes place that is way beyond and above the pay grade of the Speaker.”
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