People thinking of booking flights to the US are being put off by a confusing visa process, the US Travel Association has warned.
Kristy Chandler, the director of communications at the association, said that the US had not "captured any of the new travellers".
"Our research shows that this decline is due to perceptions abroad about the hassle factor of getting a visitor visa and the process of entering the United States" she explained.
Figures from the US department of commerce revealed that there were 4,564,895 arrivals in the US from the UK, which represents a decline from 2000’s figure of 4,703,008.
Ms Chandler added that a national strategy is needed to promote overseas visitors booking flights to the US, with the Travel Promotion Act due to be passed by Congress "in the next month or two".
The figures are being treated as a cause for concern after it was also revealed that 48 million more international travellers booked long-haul flights in 2008 compared to 2000.