Highways are kinds of bills are one of congress’s favorite vehicles for pork barrel spending. The term pork barrel refers to appropriations made by legislative bodies for local projects that are often not needed but that are created so that local representatives can win reelection in their home districts and it is defined as earmark. Earmark is when member of congress insert language into bills that provide special benefits to constituents. The frequency with which they must seek reelection makes members of the US house of representatives is more responsive to the needs of local interest group in the districts they represent.
