I do not think so. The US already refines more product that we use ourselves. We have surplus capacity.
We import more oil than we need for domestic demand, refine it and export the surplus products. Some of that is refinery "leftovers", the bottom of the barrel after higher quality fuels like gasoline and diesel have been separated out. Petroleum Coke and Residual Oil are examples of those.
Actually I think you will find that global refinery production is up and there is a global surplus of gasoline. We actually import gasoline as a result. Adding refineries in the U.S. would increase the availability of Domestic gasoline lowering the price.
Are you trying to claim the global refinery industry is consistently producing more gasoline than is used?
we are a net gasoline exporter. When looking at the data, it is important to include the blending products used to make the different gasoline recipes.
http://www.eia.gov/dnav/pet/pet_move_neti_a_epm0f_IMN_mbblpd_m.htm
http://www.eia.gov/dnav/pet/pet_move_neti_a_epobg_IMN_mbblpd_m.htm