Trump backs 25-cent gas-tax boost for road repairs and infrastructure (maybe)

Donald TrumpThe federal gas tax, which was supposed to pay for repairs and expansion to roads maintained or funded by the national government, now does nothing of the kind. Congress last raised the U.S. federal gas tax a quarter of a century ago in 1993, to the 18.5-cents-per-gallon level it remains at today. Diesel fuel is taxed at 24.4 cents per gallon...