What can we do over Esta refusal?

Have a question? Ask our expert Simon Calder

A valid Esta is required for anyone without a visa who wants to enter the US by air (Getty/iStock)

Q My sister-in-law is planning an imminent trip in North America, first flying to western Canada then onwards to Washington DC. But she has just had her application for an Esta refused. It’s not clear why, but the only possible procedure seems to be to get an appointment at a US consulate. The first available one is after my sister-in-law departs for Calgary. What can we do?

Name withheld

A I am afraid to say that your sister-in-law has done what thousands of other prospective visitors to the US do: book travel without having the necessary permission to enter America.