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The mother of Harry Dunn has appealed to the government to make her son “top priority” during the US Secretary of State visit.
Charlotte Charles asked Boris Johnson, Foreign Secretary Dominic Raab and Mike Pompeo to “please, please, discuss Harry” at the visit on Monday.
Mr Dunn, 19, died after a crash outside RAF Croughton, following which the suspect – Anne Sacoolas – fled the UK.
Mr Raab said there are “no measures” to force the United States to comply.
In a video message, Mrs Charles, said: “Mr Raab, Mr Pompeo, Mr Johnson, when you get together next week with all of your families fully intact whilst mine is in complete tatters and my family has been ripped apart,