WASHINGTON - The U.S. State Department says American anger over BP's handling of the massive Gulf of Mexico oil spill won't affect the relationship between the United States and Britain.

BP has found itself caught in a trans-Atlantic squeeze between an angry U.S. administration and unhappy shareholders because some 18 million Britons hold shares or pension funds in the company.

British Prime Minister David Cameron was expected to discuss the issue with U.S. President Barack Obama over the weekend.

State Department spokesman P.J. Crowley said Americans expect BP to deal with oil flowing into the gulf and the impact on people affected.

He added: "The British people understand the frustration and anger of the American people."