SACRAMENTO, Calif. (AP) – California Senate Democrats are proposing a significant overhaul of the state’s cap-and-trade program that would use money raised from taxing polluters to give rebates to consumers. The proposal released on Monday is the latest attempt to extend one of California’s primary efforts to reduce carbon emissions. The existing regulations expire in 2020. The measure aims to blunt the impact of higher gas and energy prices by refunding as much as 90 percent of the revenue to consumers. The rest would be used to pay for infrastructure and research on climate and clean energy. Democratic Sen. Bob Wieckowski of Fremont and Senate President Pro Tem Kevin de Leon of Los Angeles will need support from two-thirds of the Assembly and Senate to pass their bill.