RIVERSIDE --- Tribal leaders, stung by Arnold Schwarzenegger's criticism of their financial support for his political rivals, said the gubernatorial candidate got it wrong, that they do their fair share to help California's economy. "He needs to do his homework. This is all new to him," said Michael Lombardi, chairman of the gaming commission for the Augustine Casino near Coachella. "We are paying our fair share." In an ad criticizing other candidates for taking money from Indian gambling interests, Schwarzenegger says of the tribes: "Their casinos make billions, yet pay no taxes and virtually nothing to the state. ... It's...