WASHINGTON -- In an effort to reduce fuel costs and protect air quality, Congresswoman Mary Bono Mack (R-Calif.) has introduced the Diesel Tax Fairness Act, H.R. 6106, which will reduce the federal tax on diesel fuel and encourage an expanded market for clean diesel vehicles. Currently, diesel fuel is taxed six cents more per gallon than gasoline. Noting the advancement of cleaner, more-efficient diesel vehicles and the increase prices of food due to transportation costs, Bono Mack introduced the bill to reduce the federal tax on diesel fuel to the same level as gasoline.