U.S. Reps. Todd Young (R-Ind.), John Larson (D-Conn.), Mac Thornberry (R-Texas), and Ron Kind (D-Wis.) have introduced the Alternative Fuel Tax Parity Act, H.R. 1665, legislation aimed at ensuring that excise taxes on LNG and propane for highway use are levied at a rate consistent with their energy output relative to diesel and gasoline, respectively.