Remember this -- a climate bill will have impact on CO2 emissions in direct proportion to how much it raises fossil-fuel-related energy prices. When supporters of the bill say things like "it won't raise prices very much" they are in effect declaring "this bill will not solve the intended problem."
Below is a map of some of the climate actions being proposed. As portrayed here, the current cap-and-trade bill is perhaps the worst of all choices, realizing limited gains (as demonstrated by programs in Europe and their supporters own estimates) combined with high costs. The program is expensive to administer and much of the higher costs to consumers end up as subsidies to large corporations and green pork.
The combination plan of a large carbon tax offset by payroll tax reductions was discussed here.