President-elect Barack Obama is threatening legal action against a British man who has been stalking him for more than three years. British police say they are monitoring the activities of the man, David Lammy, 36, who claims to be a close friend of Obama. A spokesman for Obama confirmed that action is being considered. “This guy met Barack Obama once in 2005. Since then he has been bombarding us with letters and phone messages and posting pictures on the internet of himself posing with our client." Lammy, a former schoolboy chorister, also claims to be a Harvard graduate, a Privy Councillor and government minister. "We've never heard of him," said the Prime Minister's office today.