The issue is sensitive because U.S. Republican presidential contender Donald Trump has called for a temporary ban on Muslims visiting the U.S. due to concerns about extremist attacks.
Stella Creasy, a member of the opposition Labour Party, said Wednesday that U.S. officials gave no explanation for refusing to allow her constituents to board a flight from Gatwick Airport on Dec. 15, so she wrote Cameron seeking his intervention. She said there is “growing fear” among British Muslims that aspects of Trump’s plans are coming into practice even though they have been widely condemned.