Representative Earl Blumenauer, a Democrat from Oregon, speaks during a news conference in Washington, D.C., U.S., on Wednesday, Dec. 4, 2013. Blumenauer introduced H.R. 3636, The Update, Promote, and Develop America's Transportation Essentials (UPDATE) Act. This bill would phase in a 15-cent/gallon tax increase over the next three years on gasoline and diesel. Photographer: Andrew Harrer/Bloomberg via Getty Images