well not official...but heres more than enough evidence to suggest the worlds most powerful man is indeed a fan of the greatest football team in the world.

Barack Obama | West Ham | Barack's forever blowing bubbles | The Sun |News

Up the Irons - Barack Obama is West Ham fan - Telegraph

BBC SPORT | Football | My Club | West Ham | West Ham extend Obama invitation

http://thehnoeic.files.wordpress.com/2008/02/barack.jpg

http://www.dirtytackle.net/wp-conten...s-a-hammer.jpg