Donald Trump only made changes to his policy of separating child asylum-seekers from their parents at the Mexico-US border after Theresa May condemned it, the UK's foreign secretary has said. Boris Johnson claimed that Trump's change of heart demonstrated the "considerable and growing influence of the UK" – but MPs were sceptical. He came under pressure in the House of Commons on Tuesday to go further than the prime minister and her lukewarm criticism of Trump's policy last week.