The Speaker of the House, himself once a Conservative MP, declared his intention to oppose Trump's address to the British Parliament later this year, effectively denying Trump an honour accorded others, including President Obama.

Source: The Guardian

Donald Trump is unfit to address MPs, according to the Speaker of the House of Commons who said that he would refuse to invite the US president to speak at Westminster because of parliament’s long held opposition “to racism and to sexism”.

John Bercow warned that the opportunity to speak in the prestigious Westminster Hall during a state visit “is not an automatic right, it is an earned honour” in an extraordinary intervention that divided MPs and annoyed No 10.

The unprecedented step caused many MPs to pour praise on Bercow, but also triggered an angry response in parts of government with ministers privately claiming that he had overstepped the mark.
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The speaker made clear that he was always against the idea of Trump making a speech in the same hall that Barack Obama did in 2012, but said recent policies had even more determined to block the move.

“After the imposition of the migrant ban by President Trump I am even more strongly opposed to an address by President Trump in Westminster Hall,” Bercow told MPs, who were visibly shocked by his comments.

“I would not wish to issue an invitation to president Trump.”

In a raised voice, he added: “I feel very strongly that our opposition to racism and to sexism and our support for equality before the law and an independent judiciary are hugely important considerations in the House of Commons.”