BP sues US government over federal contracts ban

BP is suing the US government for barring the company from obtaining new federal contracts.

The Environmental Protection Agency (EPA) banned BP last November, blaming the firm's "lack of business integrity" after the Deepwater Horizon explosion.

The blast in 2010 killed 11 workers and released an estimated four million barrels of oil into the Gulf of Mexico.

BP says the ban is unfair, as Samira Hussain reports from the New York Stock Exchange.