The National Review has an article explaining why subsidizing oil refineries, or providing cheap land to build new ones, does little to drop the price of gas. See also, this story regarding Senator Hatch's sponsorship of a bill that would provide tax breaks to new oil refineries. Also, see this story about a recent discovery in Utah. If Congress can stay clear, as it has, of gasoline production, then the price of gas will likely go down.
Jerry Taylor & Peter Van Doren on Gasoline and Oil Prices on NRO Financial