Congressional Quarterly (http://www.cq.com)
Congress Watch (http://www.publiccitizen.org/congress)
Journal of Commerce (http://www.joc.com/)
North American Rail Alertness Partnership (http://www.narap.org)
Progressive Railroading (http://www.progressiverailroading.com)

Railway Age (http://www.railwayage.com)
Roll Call (http://www.rollcall.com)