Three million jobs and the safety and mobility of drivers could be at stake if Congress fails to address an impending shortfall in the Highway Trust Fund (HTF). That’s what Sen. Barbara Boxer (D-CA), Chair of the Environment and Public Works Committee told her colleagues in a letter last week. Also passing along a state-by-state breakdown of the potential job losses, Boxer along with Sens. Jay Rockefeller and Tim Johnson wrote that “simply put, the economy of our nation is at stake.” The HTF, which is funded by the federal gas tax, provides states with federal funding for surface transportation projects. MAP-21, the surface transportation authorization bill approved by Congress last year, failed to address the long-term solvency of the trust fund and the long-term future of the gas tax.