David Cameron will hold talks with Barack Obama today to highlight the benefits for Britain of a free trade deal between the EU and the US.
The Prime Minister will argue that an agreement could be worth up to £10 billion a year to the economy.
Mr Cameron may also need to reassure the president about the UK's future within the grouping.
It comes as Cabinet ministers Michael Gove and Philip Hammond yesterday became the latest senior figures to indicate they would currently vote to leave the EU.
More top news
As we see in the end of August, we mark the meteorological end of summer 2015.
The Olympic and World champion seem unfazed by the electric vehicle which sent him flying in Beijing.
The rapper declared his intention to run at the end of a rambling acceptance speech at the VMAs last night.