It's time for California to debate the pros and cons of cap-and-trade, the program that caps carbon emissions and lets companies trade any extra pollution allowances to cut them. Jerry Brown wants to extend the program so badly beyond 2020 that he has slipped it into a budget trailer bill. More than 20 advocacy groups, including Food & Water Watch and Consumer Watchdog, are saying not so fast in a letter to an Assembly budget subcomittee.