British Prime Minister Theresa May does "not agree" with Trump's order and will challenge the U.S. government if it has an adverse effect on British nationals, a spokesman said. The official comment came after May said during a meeting Saturday with Turkish leaders the decision was a matter solely for the U.S.
Her main political rival, Labour Party leader Jeremy Corbyn, called for Trump to be banned from visiting Britain until the temporary travel restrictions are rescinded.
A petition on the British Parliament's website attracted hundreds of thousands of signatures backing its call for Trump, who has been invited to meet Queen Elizabeth II, to be barred on the basis of misogyny and vulgarity.