Domestic gasoline prices have been rising and falling for years, but in the long-term, they always seem to get higher. So what's driving the ups and downs? Is the main cause of volatile prices high domestic demand, or is it unstable foreign sources of oil to supply American markets? Anchor Thalia Assuras interviews Reps. Earl Blumenauer (D-OR), and Michael Burgess (R-TX), to discuss the causes of high gasoline prices in the U.S. and potential ways to the drive them down.