PHOENIX - Gov. Jan Brewer said Friday that most illegal immigrants entering Arizona are being used to transport drugs across the border, an assertion that critics slammed as exaggerated and racist. Brewer said the motivation of "a lot" of the illegal immigrants is to enter the United States to look for work, but that drug rings press them into duty as drug "mules." "I believe today, under the circumstances that we're facing, that the majority of the illegal trespassers that are coming into the state of Arizona are under the direction and control of organized drug cartels and they are bringing drugs in," Brewer said. "There's strong information to us that they come as illegal people wanting to come to work. Then they are accosted and they become subjects of the drug cartel," she said. Brewer's office later issued a statement in response to media reports of her comments. It said most human smuggling into Arizona is under the direction of drug cartels, which "are by definition smuggling drugs." "Unless Gov. Brewer can provide hard data to substantiate her claim that most undocumented people crossing into Arizona are 'drug mules,' she must retract such an outrageous statement," said Oscar Martinez, a University of Arizona history professor whose teaching and research focuses on border issues. "If she has no data and is just mouthing off for political reasons, as I believe she is doing, then she must apologize to the people of Arizona for lying to them so blatantly." Sen ...