WASHINGTON - The chiefs of five major oil companies defended the industry's huge profits Wednesday at a Senate hearing where lawmakers said they should explain prices and assure people they're not being gouged. There is a "growing suspicion that oil companies are taking unfair advantage," Sen. Pete Domenici (news, bio, voting record), R-N.M., said as the hearing opened in a packed Senate committee room. "The oil companies owe the country an explanation," he said. Lee Raymond, chairman of Exxon Mobil Corp., said he recognizes that high gasoline prices "have put a strain on Americans' household budgets" but he defended his...