Where do the presidential candidates stand on cap-and-trade program for greenhouse-gas emissions?
Supports a cap-and-trade system to cut U.S. emissions 80% below 1990 levels by 2050. Would auction off 100% of emission credits, making polluters pay for the right to emit greenhouse gases.
Supports a cap-and-trade system to cut U.S. emissions 60% below 1990 levels by 2050. Would give away many emission credits at the start of his plan, though down the line he would phase in auctions of such credits. Would allow domestic and international offsets as a form of compliance.