Energy: Obama's Policy Positions—PICTURES

CLIMATE CHANGE: In 2008, Obama campaigned on a pledge to enact a sweeping cap-and-trade law that would slash fossil-fuel pollution, mandate increased production of renewable electricity, and spend $150 billion on clean-energy research over a decade. (AP Photo/Pablo Martinez Monsivais)

OIL AND GAS DRILLING: The president supports some expansion of oil and gas drilling: EPA and the Interior Department have approved permits for drilling in U.S. waters in the Arctic Ocean off the Alaskan coast. (AP Photo/Pablo Martinez Monsivais)

RENEWABLE ENERGY: Despite GOP attacks in the wake of the Solyndra controversy, Obama has continued to push for loan guarantees, cash grants, and tax credits for the production of wind and solar power, and tax breaks for the purchase of hybrid and electric vehicles. (AP Photo/Carolyn Kaster)

NUCLEAR ENERGY: The president supports policies that would lead to an expansion of nuclear energy. His proposed climate-change policies, if enacted, could boost nuclear-energy production. (AP Photo/Charles Dharapak)