Foreign Secretary William Hague will discuss the United States' position on the Falkland Islands with US Secretary of State John Kerry when he makes his first visit to the UK in his new role next week, according to Foreign Office sources.
The talks come amid reports that Washington will not recognise the result of next month's referendum. The US State Department said last month it recognised "de facto United Kingdom administration" of the Falkland Islands but "takes no position regarding sovereignty".
When the public vote was announced last year, a US State Department official said:
"We will not speculate on a referendum that has not taken place. Our position remains one of neutrality."
A Foreign Office spokeswoman said the UK Government is in "regular touch" with the US on the issue.