prior to july 1, san francisco had the sales tax rate of 9.5%. the city decreased by 1% when it allowed to expire. san francisco only gets a fraction of this 8.5% sales tax. 7.25% goes to this day, the city receiving about 1%. -- goes to the state, the city receiving about 1%. i'm here with -- thank you for being here. please tell us why you are in favor of proposition g. >> i believe the low income children, seniors, firefighters, and police officers are worth half a cent. it will restore funding that was cut from these programs. proposition g " restore $30 million so the children will have a better start in life and a better chance of succeeding in high school and college. >> san francisco has one of the highest sales tax rates. are you concerned that the passage will affect our tourism or adversely affect the economics? >> i am not concerned with that at all. tourism accounts for 40% of the revenue. it will still be lower than the sales tax prior to july 1 of this year. >> my understanding is that it will be eliminated if the state raise the s

cain's call for national sales tax on top of the local and national sales taxes troubles conservatives. the influential president says 9-9-9 is catchy, but it won't work, won't pass and could lead to higher taxes. >> if you have with the incomes tax one needle in your arm drawing blood why would you take three needles to stick them in on the promise they'll only take as much as they used to take? the danger is they drain you three times as fast. >> reporter: mississippi governor haley barbour seriously considered a run of his own and said if the election were today his wife would probably vote for cain. by contrast, texas governor rick perry's wife said every time she hears 9-9 of 49 she wants to call 911. carl cameron. fox news. >> bret: to talk more is economist art laffer, former advisor to president ronald reagan and joins us from new york. thank you for being here. >> it's a pleasure. >> bret: are you a supporter of 9-9-9? >> i think 9-9-9 is a wonderful plan. a lot of candidates have good plan for tax reform but i love the 9-9-9 plan and i think it's a great first step. >> bret: