According to this Article:

President: Americans ‘increasingly frustrated’
Bush said that Democrats are at fault and that “Americans are increasingly frustrated with Congress’ failure to take action.

“One of the factors driving up high gas prices is that many of our oil deposits here in the United States have been put off-limits for exploration and production. Past efforts to meet the demand for oil by expanding domestic resources have been repeatedly rejected by Democrats in Congress.”

The article also states that there are 68 million acres of federal lands where the oil companies already have leases to drill, but they don’t.

— I own some land in Florida I’d be glad to sell to you.