is they can still be victorious in november eyget e message out. one of the most controversial issues on the november ballot is in california. in cou it alex stone now reports from los angele >> reporter: california's proposition 19 would allow people 21 and over to use marijuana for personal use, but prohibit people from possessing marijuana on school grounds, using it in public, smoking in the presence of minors and driving under the influence. pot is california's biggest cash crop, believed to bring in $14 billion a year, almost double the size of the dairy industry. legalizing it would help the red-inked state, saving nearly $1 billion a year in enforcement costs and generating another $350 million in state and local tax revenue as well as providing jobs and taxable businesses. but u.s. attorney general eric holder says the federal government will not turn a blind eye to california's law, warning that prosecution of those who