As oil prices creep back above $100 a barrel, Senate Democrats are dusting off a plan first unveiled in 2008 to take away federal leases from oil companies that rent federal land but don’t use it for drilling and exploration. The revived bill, which is co-sponsored by Sens. Robert Menendez of New Jersey, Bill Nelson of Florida and Charles Schumer of New York, would charge oil companies an extra fee on every acre they are not using for energy production and would force companies to show that they are actively seeking energy sources in the area.