U.S. Fish and Wildlife Service
Senate Democrats succeed in blocking a Republican plan to allow oil drilling in the 1002 area of the Arctic National Wildlife Refuge, shown here.
The Senate blocks a provision to a military spending bill that would allow oil drilling in Alaska's Arctic National Wildlife Refuge.
Supporters of the provision could not shut off a Democratic filibuster against the must-pass bill, which includes funding for U.S. troops in Iraq and Afghanistan, hurricane relief aid and flu preparation.
Earlier, the tie-breaking vote of Vice President Dick Cheney was needed to pass a measure to trim federal spending by nearly $40 billion.