Mohamma Tariq Mahmood, from north-east London, had been due to fly to California with his brother and nine of their children, but were stopped at Gatwick Airport when they boarded the flight.
He is reportedly the latest British Muslim to have been suddenly barred from getting on a transatlantic flight, despite having been granted authorisation by US authorities online.
The case was raised by Mahmood’s MP, and the prime minister has now promised to look into the case, the Daily Mail reported.
Mahmood said: “It’s because of the attacks on America – they think every Muslim poses a threat.
“I have never been more embarrassed in my life. I work here, I have a business here. But we were alienated.”
It comes after an imam who has preached against extremism and has previously travelled to the US was also prevented from boarding a flight in similar circumstances.
Labour MP Stella Creasy from the Mahmood family’s home constituency in Walthamstow, said she had failed to receive a response from the US Embassy about their treatment.
She has since called on David Cameron to intervene and wrote in the Guardian: “If the embassy won’t answer to the family’s MP, it should answer to their prime minister and he to us about what he is doing to ensure that no British citizen is being discriminated against for their faith on our shores.”
A spokesperson for Cameron said he would consider Creasy’s letter and “respond in due course”.
The incident follows Republican front-runner Donald Trump’s call to ban all Muslims from entering the United States in the wake of the shootings in San Bernardino and Paris.
At the time, Cameron labelled Trump’s remarks “stupid, divisive and wrong”.
