Sens . Hillary Clinton and John McCain back federal gas-tax holiday . Sen. Barack Obama says plan would do more harm than good . North Carolina Gov . It also would suspend the 24.4 cent diesel tax . Bev Perdue opposes gas tax increase, saying it will hurt small businesses. McCain in Florida as part of weeklong health care tour .
Sens . Hillary Clinton and John McCain back federal gas-tax holiday . Sen. Barack Obama says plan would do more harm than good . North Carolina Gov . Bev Perdue opposes gas tax increase, saying it will hurt small businesses. McCain in Florida as part of weeklong health care tour .