BARELY a week into his presidency, Donald Trump has thrown global travel into tumult with his executive order barring travellers from seven majority-Muslim countries from entering the United States. A fellow Gulliver has posted about the potential long-term implications of the ban for the travel indusrty. But in the short run, one thing is already clear: President Trump’s action has sown chaos in American airports.

Clear to everyone but Mr Trump himself, that is. In a series of tweets, he denied that his action had caused any disruption at airports, instead blaming a Delta Air Lines computer glitch, protesters, and Democratic Senate leader Chuck Schumer, whom he accused of producing “fake tears” in support of people denied entry to the country.