Barack Obama says his opponents in the presidential race haven't done enough during their Senate careers to head off high gas prices, while Hillary Rodham Clinton says she and Obama should discuss the issues in another debate.
Obama says that despite the "Washington experience" of Clinton and Republican John McCain, nothing has happened to raise fuel efficiency standards or confront oil companies. He's calling for a windfall profits tax on oil companies and tax breaks to help middle-class families cope with energy costs.
Clinton -- campaigning in North Carolina -- says she'll go "anywhere, anytime" for another debate, "as long as Senator Obama would agree" to meet her.
Both North Carolina and Indiana hold their primaries May 6.