Biden said climate change policy must be a top national security priority.
WEST DES MOINES, Iowa (CNN) – Democratic presidential candidate Joe Biden accused President Bush Tuesday of doing nothing to reduce the dependence on foreign oil and added that, if elected, he would make climate change one of his top two national priorities.
"After ending the war in Iraq," the senator from Delaware said, "the single most important thing I think needs (to) be addressed by the federal government of the next president of the United States - absent this president having not addressed it - is to deal with climate change policy."
"That must be our top national security priority — not just environmental priority, our national security priority," he added.
Biden said the United States' dependence on oil "limits our influence around the world" and keeps oil prices high.
"President Bush refuses to do anything about this notion of reducing our dependence on foreign oil or to take any action against climate change, and that has insured that we are stuck paying the bill at the pump and we are stuck with an irresponsible foreign policy," Biden said.
Biden said his energy plan would cost about $60 billion over a four-year period. It would include setting a cap on greenhouse gas emissions and increasing fuel efficiency.
- CNN Iowa Producer Chris Welch