Some states in the U.S. are pausing gas taxes in a bid to rein in prices at the pump, but others are soldiering on without tax relief. The Michigan Senate, for instance, this week approved a suspension of state gas taxes for six months. The state's governor is expected to veto the bill, however, with one Democratic Senator who opposed the bill saying the tax was necessary for road and bridge repairs. "We are still impacting the costs that the residents who drive will incur on repairing their tires, replacing their tires, repairing their axles,…