The bill by Senators Barbara Boxer (D-California) and Bernie Sanders (I-Vermont) includes a Climate Protection Act which would impose a fee on carbon pollution emissions by the fewer than 3,000 entities that account for 85% of the nation's greenhouse gas (GHG) emissions. For the first year, the fee would be $20 per ton of carbon dioxide content of the carbon polluting substance. The fee would rise by 5.6% per year for the next ten years.